Purchased this about a month ago, and have used it regularly since. I would recommend it to anyone. As one of the other reviewers mentioned, it benefits from being used in a well constructed chair.
The heat setting is excellent for loosening up knotted and distressed back muscles, and I particularly like the fact you can focus the massage on which ever part of the back needs most attention. Being able to adjust how wide the shiatsu travels across the back is a nice touch, as all shapes and sizes can make good use of it. The heat setting is also excellent, particularly on a crisp autumnal evening!