For that price I wasn't too worried if it wasn't able to handle tight wheel nuts, worst case was it'd speed things up with swapping 4wd wheels for offroad days (6 stud) or putting semi slicks on at the track.
But I've been very surprised with it! No problem with undoing 24 wheel nuts then doing up 24 again, then leave it without recharging for a week and its still happy to do more.
I haven't tried any big 25 year old subframe bolts but my compressor would struggle with those aswell.
NOTE: I also took a punt on their drill press and it was SO shit

http://www.supercheapauto.co.nz/online- ... 2595#Cross