I use a Befco 50" on the back of my BX23...Also own a Troy Bilt 18" walk behind that makes a very nice complement to my bigger tiller...I have a turn around (island like) area in front of my house with a slight slope of about 2' and the Troy Bilt tills it just right after a couple of over lapping passes...I've found the smaller tiller to be very helpful with other small jobs too...It's a second (gas) engine yes, and after quite a few years, has not been any problem at all.
Don
Don