I can vouch for that brand as I have their corded version. For the little times that I end up using it, I figured that the battery in the cordless version would go bad.
My US General 5 drawer cart has bent at the caster mounting points and is starting to tear in that area. It's very overloaded so that's my fault. I think it would have done better had it spring loaded casters.
I've only had experience with their weatherhead sockets and their impact sockets. Their impact stuff is way better than Tekton, Icon, Pittsburgh or even SK. I own all of them and the only one that hasn't deformed at the drive end was Sunex.