Hi I've been searching this forum and others as well, but I can't really make up my mind. I have a Maglite 2D (I know nothing special) and I want to make it a little more high powered than it is at the moment. I have multiple power sources I could use. I have already have 2 D cell Nimh batterys, and a other 2/3 nimh cells. So right now I'm not worried about power, I'm worried about the light source. I've read about people using the kpr 112 and 118 lights from radio shack. If I got one of those lights I would run them on 9.6v (8 cells @1.2v a cell), now I've heard that overdriving them reduces the life span of them by a lot. How long would KPR112 last on 9.6volts, not the battery life, but the bulb life? I want something that doesn't have to be regulary replaced. What about the KPR118? which is better the 112 or 118. Then when I start looking at the LED solutions I'm just overwhelmed, and I don't know how much all of this is going to cost. I have a lathe and some alum that I think I can turn down to make a heatsink for an LED. But I don't know which LED to even look at. Can someone help me please? I'm possibly willing to put $50 into this, but not much more than that. Mabye I could be talked into putting a bit more into it. Thanks