socom - from what I've heard, they're not as good as Surefire, but they're cheaper and they're very modular. Very few people, outside of our custom modders like Mr. Bulk or McGizmo, are as good if nto better than Surefire. They use optics rather than reflectors, though they're moddable enough for you to throw a reflector in. The Longbow Max is supposed to be their 5W series, though that needs at least a 2x123 pack of some sort, so won't run on the Micra pack, at least according to Morganch_oh.
If you want a short, compact light that's very bright, I'd go with a Nuwai Quantum III if you want cheap or an Aleph 2 with 1x123 pack or MrBulk's Lionheart if you're willing to pay for quality. /ubbthreads/images/graemlins/grin.gif Otherwise, buy SureFire if you want something to compare to a Surefire.
Besides, what're you doing with this? The purpose you put it to will determine the light you need to get.