A friend has the 18V Snap-On one like that,he uses the hell out of that thing..he scraps a lot of cars,and uses it to zip off the lug nuts at the scrapyard just before the forkloader picks the vehicle up off his ramp truck...among other things..
It can take off all 6 tires on his 10 lug Ford Super Duty ramp truck without the battery going dead or running too low to tighten them sufficiently..
Not needing compressed air or a hose is very convenient..
I'd like to get a cheaper version to use for flat tire changes on my truck..