I have a gravely 260 right now and a yazoo 48 but i am looking at selling the yazoo. I am not too sure if i want to get another rider and what size i want to get. Either a 48 or 60 gravely or i am considering a walk behind because of hills and other issues. Do yoy guys think it is worth getting a walk behind or are they not worth looking at. I am looking for some feedback.