I purchased a turbosaw about 2 years ago and have used it on a 30 HP pto John Deere 3038e. It is a load for the tractor and strains the tractor getting the saw up to speed. It cuts trees up to telephone pole size easily. I do not have rear hydro so I cannot use the grapple. If a larger tree leans towards the tractor it will bind the blade and stall the tractor. I have cut about 500+ eastern red cedar. Sizes from 1/2" to about 20" stumps. On level ground you can cut the tree at or slightly below ground level. I have not rotated the teeth yet, but about 1/2 of them are chipped by hitting I believe metal in fence lines. (a couple of electric fence posts, imbedded barb wire and woven wire, and a couple pieces of scrap metal.) I get hit by wood chips when cutting trees, and the ROP has saved me from a couple of trees that fell on the tractor. I found it safer to cut larger trees with a chainsaw at 1-2' above ground and cut the stump with the turbo saw.