Funny that you're considering giving up a cast iron tub for a whirlpool when I'm intending to do the opposite. ;-) What kind of bathing experience do you prefer? If you like to use bath oils, bath salts, or bubbles and enjoy soft music while you soak, a whirlpool ain't it. You're not supposed to use oils or salts, it can coat and block the pump. No one told us this before we got one. But if you like the massaging quality of water jets - and many people do - then go for it. Can't speak to air tubs. Never had one or experienced a bath in one. "...people soup...." Ewwwww, now I want to get rid of ours even more, deedles!

I am also looking for an air tub. In researching Consumer Reports, back in 2008, they rated the AS air tub pretty poorly for construction with almost see-through acrylic walls. Their pick was the Kohler Devonshire air tub. In my remodel, I am leaning toward a BainUltra Basa Duo tub. My issue is a very small, tight space, only 60X32. The tub I am looking at has heated air flowing through. There are other products out there. You can view their products at www.bainlultra.com.

Errant_gw- If you mean water depth I think it's going to be close to 16" deep to the overflow drain. I'm 5' 8" - if I'm estimating right, when my shoulders are under water my knees will only be out an inch or two. annabee4- Glad to help. My bathroom is scheduled to be done the end of the month. As soon as I have a real test I'll be sure to update. Lisa

Overwhelmed with all options. Need recommendations for self cleaning whirlpool/air combo tub. Must fit in alcove, will also use as shower. Concerned about self cleaning aspect...how do they do it and does it really work? Thanks!!