Infinity Ultra order

Well, was bored today and did some reading today via the search on the forum and based on all your great imput, decided on the infinity ultra as a gift for two friends of mine work in night clubs....then figured I have to get one for myself...then the two guys across the hall saw the little light on my monitor and wanted in....so that's 6 lights on their way...thanks guys for pointing in me in the right direction....I ordered from batterystation.com per the candlepowerforums special...also, picked up 5 eponymous cr123s for a buck a piece....anyone try these? I have a box of surefires but figured for the money, I try them out..thanks in advance