The 910E is a version of Proform's front drive ellitpical design that is outclassed by Sole and LiveStrong.
Proform must have thought that due to the success of Sole and LiveStrong, "Hey, we need a front drive elliptical too". It seems that this is about all of the thought that they put into this machine. Do yourself a favor and stick with LiveStrong or Sole. While not a bad machine, in fact it is very average, it just doesn't match up to the other guys.