Have a couple of Surefire G2's that have served me well. I would like to find one that doesn't use batteries so fast.
the LED heads make for much better battery life than the incan heads do. I just converted my 6P with a crenulated LED head. My batts had a nasty habit of dying while the light sat waiting to be used with the old head. So far the issue hasn't cropped up with the LED head. only about 40$ online