This product appears to be sturdy, well-built and has 4 different settings, so there should be something for everyone. It seems to hold a charge well and provides intense vibration if that's what you need. Sometimes you need a rabid squirrel around the house to get at some tough muscle stiffness. I'm currently working with some nerve pain, and I hope the massage ball will help the whole system of my arm/wrist/hand/shoulder in its attempt to re-boot. Time will tell.
This is the most effective device I've found for use at home. I use it down my spine from my neck all the way down to the tail bone. While gentle on low or intermittent, high is deeply effective. Helps my arthritic shoulder too.
This works like no other device for use in the home that I have found, The deep massage works so well from my neck down my spine. Also good on my frozen shoulder.