Worth Every Penny!
Well built.  Sturdy. I was a little hesitant to purchase this as there was only one power setting (high) compared to the cm5 unit. The reviews I read indicated that this unit was pretty powerful and I thought it might be too powerful to be comfortable. But, for the price difference, I thought I'd give it a try. I've used this cordless percussion massager several times and while it is powerful, it is not painful. It provides enough percussive force to release trigger points and relieve sore painful muscles. I use it to relieve tight IT bands, and sore hamstrings. No complaints so far. I'll update if anything changes.
Rating: 5 stars