More and more I'm finding out that the adjustments made on the workout levels on the elliptical machine gives me an advantage that the treadmill or bike doesn't. I hate waiting for the treadmill to elevate or lower while I'm on it. It always seems awkward. The elliptical machine does it without hesitation even on wide ranges. The bike is a different story. Unless you have time to wait on a class the spinner is out of the question, while sitting on a recumbent bike is also awkard. I alo notice that the elliptical keep me closer to running pace when I do get back outside.