I purchased a walk behind in the beginning of the season. As of now, I am really thinking about trading it in for a stander instead. I've come to realise that a sulky is hard on the knees, because they are the ones that absorb the shock. Now, I was wondering if I could get any input on the quality of ride on standers. I would be trading it in for the Ferris SRS Z1. It has that suspension operator plate. I really need something good for my knees and body. I am worried about the abilities of a stander. I feel good in slopes with the WB since I can man handle it a bit. Not so sure about stander.