I find that Surefire flashlights are minimal bang for lots of buck. Durable, sure. Bright, absolutely. Worth it? Maybe...
I am not here to say anyone screwed up buying a Surefire. I just don't see them as being worth it for the price.
I have since dumped all of my Surefires (an A2 and a few others, including 1 G2 Nitrolon) and replaced them with a Fenix and just recently, Eagle-Tac LED lights. Fenix and Eagle-Tac (as well as a slew of other Chinese manufacturers) are pretty similar, but the ET's have been the cheapest in cost with the best in quality for that price/performance range. They are made of anodized aluminum. The anodizing is serviceable, but not great. Not a big deal to me.
My Eagle Tacs (and the one Fenix) are carried in all my vehicles. They are used for maintenance, get dropped here and there, go camping, soaked in water, oil, sometimes diesel/gas. They get used hard. None have quit. battery life is very good. They are very, very bright with nice focused beams.
If American companies could compete with the price/performance these lights offer I would buy USA-made in a heartbeat. Until then, money talks and the reliability has been equal.