The one which feels "Best" to
you.
We have the Moto Massage, and I love it. We have people come in and wet test, and even more people who will put there hands and arms in front of one. They all say "Ooooh!" However, we still sell a lot of the "Prodigy" model spas, which is the only HotSpring "Higlife Collection" tub without a Moto Massage.
It's all about how it feels to YOU. Wet test.