I purchased a WM-8H at the end of last summer. As far as customer support goes, I got the wrong PTO shaft, because of quick hitch it was too short. I called spoke to a "real" person told them my problem and they sent me the longer shaft and I sent the short one back. Couldn't ask for any thing more at that point. I only have about 2 hours on it, but for the money I think it is going to be fine for me. I have a Gr L6060 and it doesn't even grunt while chipping. I would get the 8" even with a smaller HP tractor. If you can't chip 8" wood just feed smaller wood at slower speed. Then when you get a larger tractor you won't have to up grade the chipper.
