[legion]

That reminds me, I have a HF battery-powered impact wrench I want to throw in next year's garage sale.

I spent $100 on a decent pneumatic Craftsman unit. Not Matco or Snap-On quality, but good enough for a hobbyist. I can run it for about 30-45 seconds (depending on settings) before my 12-gallon compressor needs to refill. I pretty much only use it for breaking free stubborn wheel nuts. They go on by hand, then a socket and ratchet, then a socket and torque wrench. Especially the fragile aluminum ones.

Oh, and when I attached stairs to the back of my house, the impact wrench was perfect for driving the 6" lag bolts.

I'd think an electric corded one would be okay for occasional use as well.