I got a Milwaukee corded 1/2 inch, because I don't have air (other than a pancake nailer) and couldn't justify all the outlay financially and spatially for air (as much as I would love it). Don't have the model handy, but's it's been great for removing lugs for rotations, really speeds things up. I plan to use it for other construction projects where it would help (big timbers/bolts). If you are interested, I'll dig up the model number.
It's a bit too bulky for some areas under the truck.
Konaborne got a cheaper one he likes, PM him, too.
I got a "Kawasaki" impact from amazon...it ain't no shop strength air impact but its built great and works very well.
Easily breaks lugs free, used it in my suspension installs...
made my life a fuckton easier, even has a small led built in to pretend like you need it to see how to fit sockets.haha