My gym got some of these
To be honest I only tried it because everything else was in use. My gym just got all new Precor equipment. It is honestly really solid and functional. When I got on this thing I realized it was not like an eliptical trainer. Once I got the hang of it, it kicked ass. I really felt it isolating the muscle groups, more than an eliptical. I bicycle ride and noted it was much like standing and pedaling up a hill. Great for cross training.