I've been here for a couple of years, and have mainly Surefires, 18650 clone bodies, and Malkoffs, and I try to use 17670 and 18650 cells most of the time. I was recently tasked with getting a flashlight for an old friend of my partner who is going to be visiting here from Brazil. Starting with the premise that I wanted it to be somewhat of a thrower, and not too expensive, I had to do what for me was a surprising amount of research on 2xAA lights to get up to speed on what I wanted. There are lots of what I am sure are good brands out there, that I just can't keep up on, without a fair amount of effort.