Jeez. Just get a KX2C from Surefire. Mine is 6500K tint and puts out a beam of light that I have been unable to best with anything run under 2 amps. I have most of Malkoff's full output P60 modules, and a ton from Nailbender, and the KX2C is what stays on my M4.
Advantages to the KX2C:
-Optics...it makes my supposedly 200 lumen light perform roughly like a 400-450 lumen light outside.
-CoC polymer optics...Everyone else uses Acrylic or Polycarbonate. These are very poor lens materials as they are very heat susceptible, and most Acrylics are laser-cut. That means if ANY alcohol gets on them, they will spider-web like crazy. I tested it with an M61 lens-kit, and yep, the YouTube videos are accurate. CoC is not prone to this, and it has very good thermal properties. Surefire is the only company using CoC in their optics.
-Mine has a tint of 6500K, and Surefire is currently, if I am not mistaken, using 75+ CRI LED's in this light. Comparing it to other lights I have that are 75CRI, I agree, based on my MK1 Eyeball, Calibrated, lol.
-Waterproof to any reasonable standard unless you're looking for a true dive-light.
-Quality construction in the US: Won't vibrate components loose if used on a weapon, or dropped a few times, or whatever.
-Warranty...If you have a problem, Surefire WILL! fix it. I once had an M600A that the tail-cap clicky died on (known issue a few years back) and Surefire sent me TWO replacements that were the upgraded type, free, no questions asked. My other experience is that Noveske does not use the thick spacers they provide for suppressor mounts. Garin Lee and Barry Dueck were willing to replace my suppressor mount for me using this spacer if I wanted, free of charge, and pay shipping back to me. You CANNOT beat the head of a department (Suppressor division) willing to personally wrench on your gear. For free. Cannot be beat! However, this was not necessary as Noveske uses a threading profile that does not require the spacer, as most M4 barrels do due to thread relief and shoulder radius. They make good kit, but at first, Garin Lee (who saw a picture of my M4) brought to my attention that this might be an issue and placed the offer out there unsolicited.
Yes, I'm a Surefire whore, but mainly, I'm a "If it works, I'll buy it, and I really don't care what brand it is as long as it WORKS" kind of guy. My Surefire products---from the muzzle devices to the suppressors to my lights---just WORK. So I recommend them.