I got tired of buying CR123s for my Surefire, so I junked it. If that's what you like, you might want to look here:
http://www.all-battery.com/index.asp...OD&ProdID=1015
I got a Tenergy recharger and some NiMH AA batteries (the ones I go through the most), and in the long run it might save you a few bucks.