I received my brass Pacific (green Luxeon) hot rodded to whatever Peak felt comfortable. This light is alot brighter than I expected. Minimal artifacts in the beam.The brass is very substantial and feels good in the hand. I will use one of my other Peaks for EDC though. No idea on run time with the various bodies I also received, but so far so good. The other Peaks (Pacific and Kilmanjaro) are going back for "tweaking", but I expect I'll be very happy with them.