So after hearing how tough the Surefire brand is Ive decided to break down and try one. I was looking at the 6P but if its going to be of any use to me Im going to need to upgrade the bulb to something with a longer run time. I probably use my flashlight for at least 60 minutes a night so the P60 lamp wont work. I would prefer to go with an LED drop in, the longer the run time the better. I dont really need anything more than 40 or 60 lumens. I was looking at the cree drop in from lighthound.com but after hearing it wasnt any good and only had a run time of about 2 hours, I have decided agaist that one. What drop in would you recommend?