Dealextreme has a good reputation. I've bought two lights from them thus far and they were both top notch. I did my homework on the lights before buying and knew these would be good quality. A lot of the lights on there suck though, so do searches at candlepowerforums.com before buying.

The above mentioned flashlight gets good reviews.

The only caveat to dealextreme is that it takes 15-20 days to receive your package. Be prepared for that.