Looking to use some blacklight on a rock show, primarily during breaks to set a mood using items done up in uv paint. (also helps road crew who use uv markers) Throw would be about 20 feet of a front truss. Been looking at getting a pair of Chauvet Shadow 125s, or Elation UV wash(s). As a reminder: Chauvet- Mercury Vapor 125w, Wood's glass bulb, great spikes in that region, less "purple bleed", long start up. Elation - Florescent, Wood's glass type coating on bulb, more "purple bleed", fast start-up. So, the start up time is not important on this show, but might be in a future application. Still, the big problem is that neither manufacturer actually tells you the output of their fixture. I suspect that the Shadow has a higher output and tighter beam control. Still, anybody out their done an A/B? Not much into renting as these guys are cheap (~$140) and no point in spending a bundle on some of the more pro units.