Zyllion's ZMA-13 Massage Pillow has been chosen by Massageboss.com as the Best Back Massager. You can check out The Massage Boss Ultimate Guide to see a breakdown of features and considerations that Massage Boss used to create the guide.
Massage Boss also provided a very thorough review of the ZMA-13 Massage Pillow. From the review, "It's ideal for anyone who needs a quick relief from stress and muscle tension, whether you're working from home in front of the computer or an athlete recovering from a strenuous exercise. This massager also works great for housewives, office workers, people with chronic neck, shoulder or back pain as well as elderly people who often suffer from poor circulation issues." You can see the full review here at Massageboss.com.