I have the Streamlight 1L-1AA several have recommended and while it’s nice for what it is, I’ve been happier since stepping up to the Streamlight 2L-X. I thought I wouldn’t like the size and trying to stuff it in my pocket but it’s not as bad as I’d thought. The runtime is just that much better and having a rechargeable battery is great. No more guessing or throwing away batteries prematurely.