Here is what I found… Vestureofblood Comment #123
2.5amps is the highest I’ve found on a bench test. I believe Dale has a light that goes up to ~3amps. Seems like the XHP35 would be better in a reflector style light, rather than a zoomie due to it having a wider hot spot. I like the Z1 because its a great thrower… which means using a different LED would benefit me more than the XHP35. XML2 or a XPG2 would have a tighter hot spot, while the XHP35 would be slightly brighter, with a larger hot spot (in my untested opinion).
I think it all depends on what you want to use the Z1 for. I like the Z1 because of the laser beam it produces when zoomed in and how compact it is. If you’re wanting more of a Maglite sized light, with a zooming function, a Z1 with a XPH35 might be your ticket.