We bought this for Christmas, and just love it.  It's so quiet I can use it and not disturb the others in the room.  It is very easy to watch tv or listen to the radio at the same time. The action is very smooth, though at the lowest setting it has more resistance than the machine I use at the gym.  The built-in heart monitor works fine so I was able to use that to figure out what settings worked for me.  We did have to re-tighten up one particular bolt a couple of times, but otherwise the assembly went very smoothly and was pretty easy.  — It is on rollers,… read full review »