I used to have a Bush Hog chain driven tiller and never a problem with it. There have been lots of discussion threads about tillers. The dealers who sell gear driven tillers all say that's best, and they undoubtedly know more about them than I do. But in spite of the many threads on the subject of tillers, I don't recall a single post by anyone who had a tiller he didn't like. In other words, it seems to not make any difference which brand you buy as long as you get the right size for your tractor and terrain.