I've had a few "nice" Android OS tablets, but always revert back to my trusty Lenovo laptop(s). You know -- the ones where the screen folds all the way backwards and turns it into a tablet...

A tablet, for me, has always been a novelty item. I can see where it would be beneficial for you, and your business; however -- for what I assume you want it for, I'd just get a tablet PC and be done with it. Use it like a computer when you want, or fold it over & have clients sign with their finger when needed.