I use the TLR-1 Tac light. Lapolicegear.com usually runs deals for about $100.00. It's bright, way cheaper than surefire and durable. I have shot thousands of rds w it attached to my gun and have done numerous building searches w it. Gets the job done. I've noticed ppl w surefire lights spend more money w less lumens compared to other brands that are cheaper and brighter. Just my opinion
The review I watched basically said this, "If you are going to be doing military use with it, get the Surefire, its waterproof, and you can use it everywhere. If you aren't using it underwater, get a TLR-1"