My friends and I are trying to determine the best all-around type of chain for our Stihls...we have 290's, 310's, 360's. The RMC stock chain isn't working very well in hard, dry wood (locust, walnut, black oak) without dulling; seems as if the depth gauges are too high to start with (comfort!, low kickback!), so we dress them down, usually after the first sharpening, which makes them cut better but dull quicker. What has been your experiences, and which chain do you guys run on your Stihls?