I've had good luck with the TI batteries. I don't use my lights a TON, so as far as which brand lasts longer, I really can't say. They're awesome for the price. I usually keep 5 or 6 extra hanging around just in case.
I may have to give them a try the next time I restock. If so, I'll try to post a comparison on what I find.
I'll give you a few to try before you make a mass purchase. You shooting Robert's rimfire match this weekend?
Do you use flat rate shipping?$18.04 for a box of 12 Surefire batteries.
http://www.safehomeconsulting.com/surefire-c-2_420_438.html
I'm thinking that the Magnuson-Moss Warranty Act (specifically 15 USC 2302(c)) might just come into play here...Just an FYI...if you put any other brand of batts in a Surefire other than theirs and something happens, it will void the warranty.
Do you use flat rate shipping?
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