Chief,your a serious wood cutter and I assume your talking about a powered grinder.Your best to stay away from the cheapies the one Origon sells is good but for more bucks you could get a Silvey round grinder that will be your pride and joy and last you several lifetimes.I have the silvey square grinder and like the job it does but if I were doing it again I'g go for the round grinder,makes it easier to touch up the chains with a file when your in the woods.Frank C.