I purchased mine in January 2012, and I use it at least 3x a week. I didn't care for the one with the moving arms, my thought was I would learn to balance while using it, which I have, and I would work my core and other muscles that much better. I have even carried 2 lb weights in each hand during my workout. My Achilles, and feet do not get all tingly and fall asleep on this as they did on other brands, which is the number 1 reason I went with a Precor. I wouldn't buy any other bradn!