A little further off topic than usual, but this is one of the few tools that I've purchased that I just find to be superb, the Bosch PS-40 10.8 Volt Impact Driver. They sell a couple different versions, I got the 10v one for around $120, lists for $140 on Amazon right now. If you've ever seen a mechanic change a tire with an impact wrench this is the same idea, downsized for the home shop and using a Lithium Ion battery. It's a little louder than the average drill or driver, but it drives screws with a lot less hassle. It starts turning normally, as soon as the resistance hits it starts the impact operation and just steadily drives it home. Note that there is no clutch on this, you control it with the trigger only, but it works out really well. I drive 3" screws into 2x4 lumber with no problem at all, and the battery life is very good. Comes with a spare battery and charger, recharges in about 30 minutes. The size is kinda hard to tell from the picture, but it's about half the size of the average drill, though not quite half the weight - solidly built. The big win is rarely stripping the heads on screws, and a smaller win is you don't get as tired - less strain on arms and wrist.
