I have recently thought about adding the service as well, more less something to keep busy with in the winter months here. There are a couple of guys who just grind in my area, and they seem to stay busy. The used equipment that I have available locally and am debating on is: 2004 Vermeer SC252, unknown hours, $8600 2002 Rayco Super JR 1625, unknown hours but looks ok, $8400 w trailer 2010 2500 Carlton in excellent condition. 444 hours $8900 2010 Toro STX, 800 hours, looks nice, $9500 All these machines have gas engines in the 25hp range. I am leaning towards the Toro STX because its low maintenance and hydro drive head and has no belt to change, I hear the poly chain belts are several hundred dollars and somewhat easy to break. Anyone have any advice on these machines?