I was going to ask this via PM, but I thought I might confess my lack of knowledge, and ask this publicly, maybe it will benefit someone else. I have been looking into the Dewalt DC936KA as being something I might want to invest in. That or the Makita Li-Ion Impact Wrench. I have had considerable hands on time with both guns, and although I can't quite put my finger on it, I much preferred the pistol grip DeWalt over a comparable t-handle. The Makita Impact-Wrench was a clever bugger in its own class, and the built in LED is ever so helpful when you're belly crawling under a show deck. So if anyone has any specific input in this match-up, I'd be interested to hear it. My specific question relates to the battery lifespan. While I'd really like to purchase a screw gun, it would likely see occasional home use, and occasional theatre use. Would not cycling the battery over long periods of time have an effect on its overall life? I'm thinking also specifically in regards to any memory effect, though I believe that is primarily with NiCad, and the DeWalt would be NiMH, and the Makita Li-Ion. I'm not sure how, but I have managed to entirely kill some Li-Ion rechargeable AAs. It's possible that I overcharged the batteries to 2x-4x their charge time. So how do you guys feel about screw guns for occasional use?