Not sure if your question was answered - In my opinion the answer is clearly NO! I use them all day long without issues on the knees but maybe the wrists LOL! .... they are the clear favorite of LCO's around here for a reason...solid support network is key for any success of course but they are great machines....it will make fast work in mowing lawns - for your business you will see a return on your investment - completing jobs faster, enabling you to be more productive. For personal use, no money in the pocket but you save time to do other thingsI want one in the worste way but i dont know anyone that has one. I asked this question on a lawn forum and it never got answered. We do lawncare and these seem fast, also seem great for getting on and off of it. Looks very straight forward repair wise and also i think it would be comfy...??? Commets please.