I've been using this one for 3 years now:
http://www.walmart.com/ip/Great-Outd...moker/12429510
Used charcoal for quite a while, but that's actual work keeping the temp steady. Got lazy and decided to utilize my smoking time by drinking a beer and cleaning a reel instead of stocking the fire.
I've been using this site for all my smoking advice for years (includes very active forum):
http://www.smoking-meat.com/