Like Eugene, I use Dewalt 18 volt cordless, though after 3 years my batteries are getting shorter lives. I actually 3 of them. My first one was this kit, kind of pricey now, but delivers 300 ft lbs of loosening torque, so they claim, but I question that figure. I also bought a lug socket kit that fits most lug nuts and is real handyhttp://www.amazon.com/DEWALT-DW059K-2-1 ... act+wrench
Once you get that kit with 2 batteries and charger you can buy bare tools (tool only, no charger or battery) much cheaper. I alos have this one, tightening force is approx 100 pounds which is the right force fr most wheel lugs.http://www.amazon.com/DEWALT-Bare-Tool- ... act+wrench
plus a small impact driver I uses for removal of most cub bolts. Dewalt sells on Amazon, and has so far had the best prices I have found anywhere. If you have time to browse the tools on amazon and then wait a week or two, it is amazing how often they go on sale. Dewalt now has a line of 20 volt tools out that I assume is intended to replace the 18 volt, or maybe to supplement it with a little more power. It is real handy to have drills, impact tools, saws, etc. that all use the same battery.
When neither of those will do it, I grab this one, but be careful with it, I have broken a 5/8 bolt that was stuck.http://www.harborfreight.com/12-in-Prof ... MiJ9%0D%0A
Looks like it is on sale at presenthttp://www.harborfreight.com/