I own a Sundance Cameo. Had it since June 2007. We love it. The therapy seat gives you a great back massage whle the whirlpool jets soothe your feet and legs. You can use the diverter valve to direct the water from the whirlpool jets to the back jets, which really gives you some deep muscle massage if that's what you are looking for.
You really should wet test and tell your wife to do so as well. Some dealers will allow you to do so after closing if that would make her feel more comfortable. There are a lot of nice spas out there. And for that amount of money, you should do all you can to make sure you get what you both want.