Originally Posted by bonjing

LED all the way! Not sure if they make weapon lights anymore that are halogen.
LED's take the abuse and last longer than the bulbs, downside is if something goes wrong it's not a simple replace the bulb, you gotta send it back to the manufacturer.

Look around, I've had good luck with LA Police Gear, sometimes they go on sale. I think I've seen them on sale for around $80 (TLR-1)