Target carries a Brinkmann 3w LED which should fit the bill. It uses 3AAs and is very satisfyingly bright. It's light, rugged, and for around $30, I think it's a great light.

For truck work like changing a tire at night, I'm a really big fan of the Energizer 6 LED headlamp you can get at any WalMart/Target for around 15 bucks. The only thing I really wish they would change is to put a strap over the top of the head and not just around. Even so, it's a great light to have.

I carry both and the nice part is having the same batteries for both.