I just ordered a SureFire A2 Aviator yesterday. Even thought the price is a bit steep, I've read that it is well worth the money. If you are going to consider one, when it arrives, I'll be sure to post a comparison to a 2 D mag light. The aviator throws 50 lumens of light for 60 minutes, compared to a 2 D mag light which is about 18 lumens. The aviator also has a 3 lumen LED mode.

Frank