As others have said, a sub-frame is most important. I like the convenience of being able to have the BH attachment available anytime I need to dig up a leaky waterline, plant a tree, or dig up a stump, etc. My nearest rental place is an hour one way away from me and half the time their mini-x is out which prompted me to get my BH attachment. Personally, if I was to use a cab tractor with the BH, I wouldn't bother owning the attachment and I would go with a separate machine. If you are going to do any trenching, You need to be able to reach the loader control from the BH seat so you can raise and lower the loader when you need to move. That way you can push the tractor along while you trench with the hoe. Otherwise you need to get on and off every time you need to move or have an additional person drive for you. My BH attachment is a Woods and has given me good service by the way.