My current function at work is to fix gear, train people in wiring stuff and lighting in general and to buy equipment especially lamps. (Before that, I was a Master Carpenter, TD and a Rigger.) I average buying about $1,000.00 per day in lamp purchases of all types and that's conservitave. I'm also writing a book on lamps and the differences between not only types but brands of them, along the lines of the Photometrics Handbook in usefulness - (kind of a Bible for the lighting design profession.)

Anyone who has interests or questions might post here about them. I don't sell them to people, just advise on them. Good thing to learn about if lighting is your desired prosession much less about general lamps.

Here is a extremly small example on HPL lamps on the market of my far in the future's book appendix: (Note the last number is for hours in life.) I use such a table (and it looks much better in table format,) at work every day in choosing what's the best lamp for a fixture or what other versions are available.

HPL375w/115v Osram/Sylvania #54625 CL, Quartz 373w/115v T-6 LCL 60.3mm G9.5*HS Any Burn Pos. 2,950°K 10,540 Lum 300

HPL-375/115v Ushio #1000666 CL, Quartz (JS115v-375w C) Low Seal Temp. 375w/115v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,250°K 10,540 Lum 300

HPL 375/115 Halco CL, Quartz 375w/115v T-6 G9.5*HS Universal Burn 3,200°K 10,540 Lum 300

HPL375w/115v/X Osram/Sylvania #54649 CL, Quartz, Extra Life 375w/115v T-6 LCL 60.3mm G9.5*HS Any Burn Pos. 2,950°K 8,000 Lum 1,000

HPL-375/115X Ushio #1000667 CL, Quartz(JS115v-375w X) Low Seal Temp. 375w/115v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,050°K 8,000 Lum 2,000

HPL 375/115X Halco CL, Quartz 375/115v T-6 G9.5*HS Universal Burn 3,000°K 8,060 Lum 2,000

HPL-375/230X+ Ushio #1003182 (JS230v-375wXN) CL, Quartz Extended Life 375w/230v T-18.35mm 6-C8 LCL 60.3mm G9.5*HS Low Seal Temp. 3,000°K 7,250 Lum 1,000

HPL-375/240X+ Ushio #1003183 (JS240v-375wXN) CL, Quartz Extended Life 375w/240v T-18.35mm 6-C8 LCL 60.3mm G9.5*HS Low Seal Temp. 3,000°K 7,250 Lum 1,000

HPL550T6/64v Osram/Sylvania #54813 CL, Quartz 550w/64v T-6 LCL 60.3mm G9.5*HS Any Burn Pos. 3,265°K 14,600 Lum 300

HPL550T6/77v Osram/Sylvania #54623 CL, Quartz 550w/77v T-6 LCL 60.3mm G9.5*HS Any Burn Pos. 3,265°K 16,170 Lum 300

HPL-550/77v+ Ushio #1000668 CL, Quartz(JS 77v-550w C) Low Seal Temp. 550w/77v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,250°K 16,170 Lum 300

HPL 550T6/77v/X Osram/Sylvania #54604 CL, Quartz X-Life 550w/77v T-6 LCL 60.3mm G9.5*HS Any Burn Pos. 3,265°K 12,160 Lum 2,000

HPL-550/77X+ Ushio #1000669 CL, Quartz(JS 77v550w X) Low Seal Temp. 550w/77v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,050°K 12,160 Lum 2,000

HPL 550/77X Halco CL, Qaurtz 550w/77v T-6 G9.5*HS Universal Burn 3,000°K 12,160 Lum 2,000

HPL575T6/95v Osram/Sylvania #54822 CL, Quartz 575w/95v T-6 LCL 60.5mm G9.5*HS Any Burn Pos. 3,265°K 16,600 Lum 300

#6989P/S Philips #924541930900 CL, Quartz (GLC type w. Remov. Heat Sink) 575w/100v T-20mm 13x8.5mm LCL 60.5mm G9.5+HS “Compact Source” (Shock Res.) 3,200°K 15,500 Lum 400

HPL575/C G.E. #92431 CL, Quartz (HRG) 575w/115v T-6 LCL 60.2mm G9.5*HS Universal Burn 3,200°K 16,500 Lum 300

HPL 575 G.E. #37129 (?disc.) (?Disc.)CL, Quartz, Single Coil. Square Filmt. 575w/115v T-6 9.5x6.8 LCL 60.3mm G9.5*HS Any Burn Pos. 3,200°K 16,520 Lum 300

HPL575T6/115v Osram/Sylvania #54622 (#93725) CL, Quartz 575w/115v T-6 LCL 60.3mm G9.5*HS Any Burn Pos. 3,265°K 16,520 Lum 300

HPL-575/115v+ Ushio #1000670 (JS115v-575wC) CL, Quartz, Low Seal Temp. 575w/115v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,250°K 16,520 Lum 300

HPL 575/115 Halco CL, Quartz 575w/115v T-6 G9.5*HS Universal Burn 3,200°K 16,500 Lum 300

GLC*HS Halco CL, Qaurtz 575w/115v T-6 c-13D G9.5*HS 3,200°K 15,500 Lum 300

GLC+HS Philips #29429-8(518736) (#6989P/S) CL, Quartz (GLC w. Remov. Heat Sink) 575w/115v T-20mm 13x8.5mm LCL 60.5mm G9.5+HS (c-13D) “Compact Source” (Shock Res.) 3,200°K 15,500 Lum 400

HPL575/LL/C G.E. #92434 CL, Quartz Long Life (HRG) 575w/115v T-6 LCL 60.2mm G9.5*HS Universal Burn 3,050°K 12,360 Lum 1,500

GLA+HS Philips #29430-6(518767) (#6992P/S) CL, Quartz (GLA w. Remov. Heat Sink) 575w/115v T-20mm 13x8.5mm LCL 60.5mm G9.5+HS (c-13D) “Compact Source” (Shock Res.) 3,100°K 13,500 Lum 1,500

GLA*HS Halco CL, Quartz 575w/115v T-6 c-13D G9.5*HS Base Down 3,100°K 13,500 Lum 1,500

HPL 575 LL G.E. #37815 (?disc.) (?Disc.) CL, Quartz, Long Life, S. Coil Sq.Filmt 575w/115v T-6 10.5x6.9 LCL 60.3mm G9.5*HS Any Burn Pos. 3,050°K 12,360 Lum 2,000

HPL575T6/115v/X Osram/Sylvania #54807 CL, Quartz, Extended Life 575w/115v T-6 LCL 60.3mm G9.5*HS Any Burn Pos. 3,065°K 12,360 Lum 2,000

HPL-575/115v+ Ushio #1000671 (JS115v-575wX) CL, Quartz, Low Seal Temp. 575w/115v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,000°K 12,360 Lum 2,000

HPL 575/115X Halco CL, Quartz 575w/115v T-6 G9.5*HS Universal Burn 3,000°K 12,360 Lum 2,000

HPL575/Thorn G.E. #37533 (?disc.) (?Disc.) CL, Quartz 575w/120v T-6 G9.5*HS 3,200°K 16,500 Lum 300

HPL575/C(120v) G.E. #92433 CL, Quartz (HRG) 575w/120v T-6 LCL 60.2mm G9.5*HS Universal Burn 3,200°K 16,520 Lum 300

HPL 575 (120v) G.E. #37533 (?disc.) (?Disc.) CL, Quartz 575w/120v T-6 LCL 2.3/8" G9.5*HS Any Burn Pos. (*HS = Heat Sink Lamp Base) 3,200°K 16,500 Lum 300

HPL 575 (120v) G.E. #37626 (?disc.) (?Disc.) CL, Quartz, Single Coil Square Filmt. 575w/120v T-18mm 9.5x6.8 LCL 60.3mm G9.5*HS Any Burn Pos. 3,250°K 16,520 Lum 300

HPL-575120v+ Ushio #1000672 (JS120v-575wC) CL, Quartz, Low Seal Temp. 575w/120v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,250°K 16,520 Lum 300

HPL575T6/120v Osram/Sylvania #54817 CL, Quartz 575w/120v T-6 LCL 60.3mm G9.5*HS Any Burn Pos. 3,265°K 16,520 Lum 300

HPL575/LL/C (120v) G.E. #92435 CL, Quartz Long Life (HRG) 575w/120v T-6 LCL 60.2mm G9.5*HS Universal Burn 3,050°K 12,360 Lum 1,500

HPL 575LL (120v) G.E. #37816 (?disc.) (?Disc.) CL, Quartz L. Life, S. Coil Sq. Filmt. 575w/120v T-18mm 10.5x6.9 LCL 60.3mm G9.5*HS Any Burn Pos. 3,050°K 12,360 Lum 2,000

HPL-575/120X+ Ushio #1002283 (JS120v-575wX) CL, Quartz, Low Seal Temp. 575w/120v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS 3,050°K 12,360 Lum 2,000

HPL575(230v) G.E. #37128 CL, Quartz, Single Coil Hexagonal Filmt. 575w/230v T-18mm 10x9.5 LCL 2.3/8" G9.5*HS (*HS = Heat Sink Lamp Base) Any Burn 3,200°K 15,000 Lum 300

HPL 575LL (230v) G.E. #37817 (?disc.) CL, Quartz, Long Life S.Coil Hex Filmt 575w/230v T-18mm 12x9.5 LCL 60.3mm G9.5*HS Any Burn Pos 3,050°K 11,780 Lum 1,500

HPL575w/230v Osram #54618 (#93728) CL, Quartz w. Heat Sink Base 575w/230v T-20mm LCL 60.3mm G9.5*HS (MOL 104mm) Universal Burn. Pos. 3,265°K 15,000 Lum 300

GKV*HS (230v) Philips #36374-7 (#6986P/S) CL, Quartz 575w/230v c-13D LCL 2.38" G9.5*HS 3,200°K 15,000 Lum 400

GLB*HS (230v) Philips #36375-4 (#6999P/S) CL, Quartz 575w/230v c-13D LCL 2.38" G9.5*HS 3,200°K 13,000 Lum 1,500

HPL-575/230v+ Ushio #1000673 (JS230v-575wCN) CL, Quartz, Low Seal Temp. 575w/230v T-18.35mm 6-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) ?3,200°K 14,900 Lum ?400

HPL-575/230X+ Ushio #1002233 (JS230v-575wXN) CL, Quartz, Low Seal Temp. 575w/230v T-18.35mm 6-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,050°K 11,780 Lum 1,500

HPL 575 (240v) G.E. #37131 (?disc.) (?Disc.) CL, Quartz, Single Coil Hex Filmt. 575w/240v T-18mm 10x9.5 LCL 60.3mm G9.5*HS Universal Burn Pos. 3,200°K 14,900 Lum 300

HPL 575LL (240v) G.E. #37818 (?disc.) (?Disc.) CL, Quartz, Long Life, S. Coil Hex Filmt. 575w/240v T-18mm 12x9.5 LCL 60.3mm G9.5*HS Any Burn Pos. 3,050°K 11,700 Lum 1,500

HPL575/240 Osram/Sylvania #54619 CL, Quartz 575w/240v T-6 G9.5*HS 15,000 Lum 400

HPL-575/240v+ Ushio #1000674 (JS240v-575wCN) CL, Quartz, Low Seal Temp. 575w/240v T-18.35mm 6-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,200°K 14,900 Lum 400

HPL-575/240X+ Ushio #1002234 (JS240v-575wXN) CL, Quartz, Low Seal Temp. 575w/240v T-18.35mm 6-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,050°K 11,780 Lum 1,500

#6986P/S (230v) Philips #924541844200 CL, Quartz (GKV type w. Remov. Heat Sink) 600w/230v T-20mm 13x8.5mm LCL 60.5mm G9.5+HS “Compact Source” (Shock Res.) 3,200°K 15,500 Lum 400

#6991P/S (230v) Philips #924542044200 CL, Quartz (GLB type w. Remov. Heat Sink) 600w/230v T-20mm 13x8.5mm LCL 60.5mm G9.5+HS “Compact Source” (Shock Res.) 3,100°K 13,000 Lum 1,500

GKV*HS (240v) Philips #924541845500 (#6986P/S) CL, Quartz (GKV w. Remov. Heat Sink) 600w/240v T-20mm 13x8.5mm LCL 60.5mm G9.5+HS “Compact Source” (Shock Res.) 3,200°K 15,500 Lum 400

GLB*HS (240v) Philips #924542045500 (#6991P/S) CL, Quartz (GLB w. Remov. Heat Sink) 600w/240v T-20mm 13x8.5mm LCL 60.5mm G9.5+HS “Compact Source” (Shock Res.) 3,100°K 13,000 Lum 1,500

HPL750T6/77v Osram/Sylvania #54825 CL, Quartz 750w/77v T-6 LCL 60.5mm G9.5*HS Any Burn Pos. 3,265°K 22,950 Lum 300

HPL 750 / 77v Ushio #1000676 CL, Quartz(JS 77v750w C) Low Seal Temp. 750w/77v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,250°K 22,950 Lum 300

HPL 750 G.E. #37823 (?disc.) (?Disc.) CL, Quartz, Single Coil Square Filmt. 750w/115v T-18mm 11.5x7.2 LCL 60.3mm G9.5*HS Any Burn Pos. 3,250°K 22,000 Lum 300

HPL750T6/115v Osram/Sylvania #54602 CL, Quartz 750w/115v T-6 LCL 60.5mm G9.5*HS Any Burn Pos. 3,265°K 21,000 Lum 300

HPL-750/115v+ Ushio #1000675 (JS115v-750wC) CL, Quartz, Low Seal Temp. 750w/115v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS (*HS = Heat Sink Lamp Base) 3,250°K 21,900 Lum 300

HPL-750/115X+ Ushio #1003153 (JS115v-750wX) CL, Quartz, Low Seal Temp. 750w/115v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS 3,050°K 16,400 Lum 1,000

HPL750/C G.E. #92432 CL, Quartz 750w/120v T-6 LCL 60.2mm G9.5*HS Universal Burn 3,200°K 22,000 Lum 300

HPL-750/120v+ Ushio #1003144 (JS120v-750wC) CL, Quartz, Low Seal Temp. 750w/120v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS 3,250°K 21,900 Lum 300

HPL-750/120X+ Ushio #1003178 (JS120v-750wX) CL, Quartz Extended Life 750w/120v T-18.35mm 4-C8 LCL 60.3mm G9.5*HS Low Seal Temp. 3,050°K 16,400 Lum 2,000

HPL 750 (230v) G.E. #37824 (?disc.) CL, Quartz, Single Coil Hex Filmt. 750w/230v T-18mm 11.5x9.5 LCL 60.3mm G9.5*HS Any Burn Pos. 3,200°K 19,750 Lum 300

HPL-750/230v+ Ushio #1002289 (JS230v-750wCN) CL, Quartz, Low Seal Temp. 750w/230v T-18.35mm 6-C8 LCL 60.3mm G9.5*HS 3,200°K 19,750 Lum 300

HPL-750/230X+ Ushio #1003179 (JS230v-750wXN) CL, Quartz Extended Life 750w/230v T-18.35mm 6-C8 LCL 60.3mm G9.5*HS Low Seal Temp. 3,050°K 15,600 Lum 1,500

HPL 750 (240v) G.E. #37826 (?disc.) CL, Quartz, Single Coil Hex Filmt 750w/240v T-18mm 11.5x9.5 LCL 60.3mm G9.5*HS Any Burn Pos. 3,200°K 19,750 Lum 300

HPL-750/240V+ Ushio #1003184 (JS240v-750wCN) CL, Quartz, Low Seal Temp. 750w/240v T-18.35mm 6-C8 LCL 60.3mm G9.5*HS 3,200°K 19,750 Lum 300

HPL-750/240X+ Ushio #1003180 (JS240v-750wXN) CL, Quartz Extended Life 750w/240v T-18.35mm 6-C8 LCL 60.3mm G9.5*HS Low Seal Temp. 3,050°K 15,600 Lum 1,500