FYI, Oxygen is damaging to skin and other cells of the body. The fact that your body can use it to convert into energy is because oxygen gas (in the air) forms high energy chemical bonds, which your metabolism breaks and then traps the energy. Oxygen damages DNA, fatty acids (ie skin membranes) and other cells in your body. That's why ANTI-oxidants are good for you - Vitamin C, E etc neutralize oxidants when applied externally or taken internally. I find it really hilarious that people think increasing oxygen will make you look younger. No, it won't. A vigorous, stimulating bath might hydrate your skin, making it temporarily look better - but nothing to do with the oxygen content.

We have an MTI Tranquility 2 bath tub. It has the air bath feature and I love it. It even has an aromatherapy feature which is great also. We have had no problems with it and it came highly recommended by our dealer because of the warranty.

Wanted to say thanks to all who posted here and raised other perspectives, offered suggestions and in general made me think about things I probably had not thought of before. Very helpful and very appreciated. I managed to go out and see some empty tubs today but even that helped me see some things. At this point I am going to visit with my contractor to see if there is any reasonable way to fit a 66 inch tub into the bathroom. I am 6 ft 1 and while I can fit inside the 60 inch it is an easier fit to go one size up. Sometimes seeing is helpful! My list is now fairly short: Kohler Underscore Aquatic Serenity 35 Mirabelle Edenton 36x66 or 36x60 I had thought about the MTI Andrea 11 but pricing there starts to climb rapidly and there just comes a point where I have to say "enough". If I spent 60 minutes every day in the tub an in line heater, arm rests etc might be a good idea. One thing about the Serenity that was good to see is how high and wide the borde rof tub is. Definitely will require a long reaching faucet and I wonder if climbing out an dover will be difficult (tub I saw today was not yet set up in its box) The Aquatic certainly looked ok. As did the Mirabelle (lowest price option). I did not see the Edenton but one similar. Overall I am probably somewhat partial to the Kohler underscore "look" but then it wa salso undermounted. I do prefer an under mount appearance but not sure I want to go there. Seems more involved for the installation. I also need to see what the 240V aspects will cost for the install (not sure I have space in breaker box). Still deciding but the list is very much smaller now! Water depth on all of these tubs is more than deep enough.. 17.5 to almost 19 inches to overflow.

I just ordered my tub today, so I can't give you any feedback except that the empty one is very comfortable, LOL. It is also really pretty. I decided against the virtual spout because I realized... I often wash my hair under the faucet in the tub before I take a bath, and if the water came in along the side I wouldn't be able to do that anymore. If you look on their website they have a list of all of the options you can order on any of their tubs, with pictures and descriptions. MTI installs the grab bars but I decided against them too. I wanted the sleek look of the tub without bars protruding into the bathing well. The sides of the tub are straight up and down and I was afraid it would feel weird to have this curved things sticking out on either side. With my contractor's enthusiastic support, I did order it with a pre-leveled foam base.