I have a 2006 Vermeer SC352 I will be selling on Ebay next month for $11,500. It has around 450 hours on it. It has been a money making hog. I have never had any problems with it and I upgraded the cutting wheel last year to a Revolution wheel but, honestly, I can't tell it made a huge difference. I am selling it because I bought a brand new Carlton SP7015 in November. I just don't need two stump grinders. The SC352 literally sips diesel fuel at the rate of 1 gallon per hour. I can't make comments about other grinders and I have read people who trash one machine over the other. There is only one complaint I have with the Vermeer and I tested some other brands too and that is it is very slow to transport across the ground. I call it a crawl. I have a couple of suggestions for you and one is make certain the piece of equipment you buy is not stolen. These things come with a bill of sale but are not registered like a car. As far as grinding, I always babied my baby and never took bites that were so big they would bog the engine down. Also, always keep sharp teeth and you will be amazed how much quicker you can get the job done. I love stump grinding and I think you cannot go wrong by starting with a machine like the SC352. You will always assume some risk by buying used because you just don't know the history of the machine.