I'm looking at possibly getting some Altman PAR 38 cans (medium screw base) for a small stage for a coffee house type setting, and am wondering what lamp to use in them. It seems the R lamps are no longer made, or are at least hard to find. I'd prefer to not have the PAR 56/PAR 64 MFL style look with the oval hotspot, and more of a rounded beam fresnel look. Would a PAR38 be a drop in replacement for an R38, or is this pretty much a completely obsolete fixture at this point. A 6" fresnel with a BTL is massive, massive overkill for my needs. A S4 Fresnel with an HPL-375 is probably also in the overkill range.