I like the streamlight scorpion. normally ~$40 I got a second one on sale for $28 last year.
I loved my surefire E1e but I lost that tiny bugger
I also have a streamlight stylus (about the size of an ink pen) it is a good secondary and pretty bright for 2 AAA batts. they make a single AAA version too. battery life is pretty good. I use that thing daily at work and in a year I don't remember having to change the batteries. I want to say maybe I did once just to be safe but I really don't remember ever doing it.