There's a special buy this week on a Goodyear Racing Cordless Impact Wrench. Like this one: http://www.jcwhitney.com/autoparts/P...019807/c-10101
at Canadian Tire. It's rated for 200 ft-lbs of torque (although I highly doubt it can attain that).

Here's a review someone did:
http://f150online.com/forums/lightni...nap-400-a.html

More here: http://toolmonger.com/2007/07/17/dea...wrench-for-70/

When not using air tools, I use either the corded Mastercraft impact gun (hey, it came free with a full set of Maximum impact sockets...) or a cordless 14.4v Makita impact. The Makita is great for tight spots, but the Mastercraft works perfectly fine for doign things like taking off rims, cross members, and anything that's relatively out in the open.