I have one. It's the PTO powered version. Bought it used 3 years ago, and it has given me good service. My only problem with it has been when changing the blades. They use allen head bolts to hold the blades in place. They are a bugger to get out, and heaven help you if you don't get an allen wrench seated all the way into the head, and you round off the faces of the socket.... /forums/images/graemlins/frown.gif. If you decide to buy the one you are looking at, my suggestion would be to replace all those bolts with new ones using anti-sieze compound on them. Other than this, it's a nice machine, and you can't beat it for the price. I bought mine for $100. It'll do 3 inch stuff no problem.
Oh, one more thing. Having an extra set of blades is real handy. They are also pretty expensive ($60 for a set). That was tough to swallow when I only gave $100 for the whole thing! Good luck with yours if you decide to buy it!
Corm