I have only had it a few weeks, so far all seems good. It is not overly loud, except for when preforming some of techniques that require you to stand on one foot. However it still is not overly loud.
I love the Rhythm vibration unit. The handles help when my bad knee feels a little shaky. I have been using it daily for only 10 minutes but would like to use it a bit more. My legs feel much better and overall less stiffness when getting up.
My husband is diabetic and had a triple bypass last summer (plus he's had a knee replaced in the last few years). I thought this would be good low-impact way for both of us to improve circulation. The unit was fairly easy to put together.