Diamondback 510Er Elliptical Review
TREADMILL DOCTOR NOTE :
The Diamondack 510 Er is the rear drive cousin to the 510 Ef and provides the buyer with many of the same advantages that the Ef version does.
The 510 Er is a rear drive machine that gives the user a similar feel to what you can get from a LifeFitness club elliptical for only $800. Of course it won't hold up over time like the LifeFitness will, but then again you aren't having to pay $6000 either.