Lastly, there is the NordicTrack SL710 recumbent exercise bike. It retails for a little less than the U400. Personally, you are better off spending the extra and getting the U400. You only get 8 rather than 10 programs and the user weight capacity drops from 300 lbs to 250 lbs. The biggest claimed benefit of this bike is the Step-In design - this is where the center of the bike has been designed to be as near the ground as possible making it easy to get on and off the bike. The only reason to buy this model would be because you find it difficult to get on and off a more conventional recumbent.