I have to agree with Randy. When I was in the market for a splitter I borrowed one friend's tractor-powered one, and then another friend's self-powered one. Self-powered wins, hands down. Disconnecting the splitter from the tractor allows you to use the tractor to haul split wood to the shed while yer kid keeps splitting, etc. Plus yer not putting hours on yer expensive tractor engine. The little Honda engine on my 27 ton Troy-Bilt just sips fuel; I'm pretty sure its more economical than running a whole tractor would be.