This GX3PRO is amazing, it is great to target specific muscle groups and help release tension. My husband is a stressaholic, and often has back pain. So far he is enjoying the spine attachment for his lower back! Decent power, good at releasing Tension. This is true percussion therapy. It comes with quite a few head options, all seem pretty effective for various areas (back, specific spot massage, broad massage, leg massage, I have no problem about it so far and would highly recommend it to anyone who's looking for a massage gun.