I have been meaning to post this for a while but keep fergettin', anyhoo, my knee has been bothering me for a while (ever since I started working out) and I kept attributing it to bad shoes, or so I thought. I had been using the reebok step for years, even with Cathe videos, and FINALLY ordered the STEP like Cahte uses through their website oh, maybe 3 months ago. Since using it my knee is SOOOOO much better!! Yeah, it still bothers me but nowhere NEAR how much it use to. No offense to Reebok, but the STEP has much more give to it. I only wish I had known sooner, so thats why Im posting, to maybe help out others in the market for a new step. Your knee(s) will love ya for it!!!