I've had both the Streamlight TLR-1 and Surefire X200 (which I'd like to upgrade to the X300) but I'm poor
). Both are VERY good lights and you can't go wrong with either one. The TLR-1 I had (not sure if they changed since then) had an alumunin body compared to the X200's polymer. (if that matters to you which it didn't to me). However, I stuck with the Surefire just cause it seems a little less bulky to me. When it comes to lights and lasers, I've learned to stick with the known brand names as I've wasted quite a bit of money on low end stuff that kept breaking on me. Alot of times I don't really buy into the "you get what you pay for" but this is one of the times where I agree with that statement. Here's my X200 on my USPc:
