I have a 19/50 HP with less than 40 hours on it. The thing doesn't give me any problems so I hate to mess with something working but... Some of my properties have some good sized hills and I do them with a 21". Thought was I could cut alot of time by using a stander. I went to K.C. this Saturday to try out the Wright and really like it. I took right to it and it felt good. I wonder if it would bother my knees at the end of the day? Really the only thing holding me back is an all day test I guess and not wanting to take a major punding on trade in of my HP. I can't really see keeping the ZTR when I would mainly be using the stander. I don't have any properties over 4 acres and only have 1 over 3/4 of an acre. Any issues with knee or leg problems using the Wright all day long? I don't like giving up the tire size to get the quick adjustment deck so I would get the fixed deck. Should I just keep the Exmark as it is brand new or try and sell it on the open market? Dealer said he would give me 3500 for it trade but can't even think of that.