My crapsman does pretty good, but it sure likes batteries. As in put a new battery in to finish tightening the lug nuts on the pick-up tire you just changed.
Boss' dad has an 18V DeWalt, haven't used it much but it seems to be pretty good. DeWalt is pretty proud of their tools but it's hard to go wrong when buying a DeWalt tool, too.
I too am waiting for one one of them to come out with a grease gun.