I investigated at least a dozen other massage chairs before selecting OSIM, and I chose it because it had the best features for the price. Specifically, the features I valued in order of importance were: the long-track (massage from neck to butt), foot massage, shoulder detection, shoulder massage and the v-grip. uDeluxe does all of these and quite well so I gave it 5 stars.
Here are a few details on the uDeluxe specifically. The packaging was adequate, no delivery damage. Unpacking was easy. No assembly needed. Operating the controls was so much easier than my last chair. Recommend it!