I am looking at getting myself a Strion as an everyday light, but my only concern is that the Bulb will have to be replaced on a regular basis. Being rechargable, if I were to use it for 20mins a day, and recharge it every 3rd or 4th day, how often would I have to replace the Bulb? I am guessing every 5 hours, and it would then really make the flashlight a bit expensive to use all the time. I could also get a Kr1/Kr2 rechargeable kit for the g2/6p for a bit less money. Which would be the better option, as I believe the SF bulbs should last much longer.