This ProForm Quick Burn SpaceSaver Elliptical is by far the best elliptical machine in the market.  I have used others, and unfortunately, they did not last.  It has so many features, I don't even know where to begin; Quick resistance buttons, water bottle holder, 6 different programmable workouts, and it features the IFit program that features Jillian Michaels, the famous trainer.  And the Space Saver feature is genius!  It has made it possible for me to have a quality elliptical in my home, with very little space.  The machine folds up, so it takes up very little space.  I never get tired...