I'm looking at investing in an eliptical trainer. My research so far shows it's a good low impact way to get some exercise but just to make sure the glide is 19" and the fly wheel is heavy enough. I don't need all the bells and whistles... just a durable well functioning machine. Any comments or suggestions greatly appreciated! #excercise eliptical #Fibromyaliga #undifferented auto immune disease #eliptical