As the spa industry grows, it's experiencing something of an arms race, with practitioners pushing for more exotic and exclusive treatments to offer truly unique experiences. But with an hour of treatment running into the hundreds of dollars, what's

really

worth the money?

TheStreet.com

asked the experts for their opinion on the best values:

My personal favorite is the European facial. It's one hour and $84. While it's not time saving or cheap -- your skin glows for two to three weeks after you have one. We use a five-step purification process. And in addition to the facial, you get a facial massage, a neck massage and we do your upper back and shoulders. I tell clients not to operate heavy machinery afterwards.

-- Susie Galvez, author of Hello Beautiful and owner of Face Works Day Spa in Richmond, Va.

The Sonoran scalp massage. It's just $40 and 20-minutes long. It's a scalp, neck and upper shoulder massage. If I don't want to deal with the full massage at $100, for 20 minutes, it's the simply best treatment we have and I never believed it until I had one. And it's a big favorite with businessmen. Because of the time, you can sneak in to get one then head back to the office feeling refreshed.

-- Terri Worthington, spokesperson for the Spa at Camelback Inn in Scottsdale, Ariz.

We have a rapid rub, which is a 30-minute massage for $65. You can focus on whatever body part you want. If your back or neck hurts from looking at the computer screen all day, you can just do that. And with the rapid rub, you get to experience our locker room and the lounge, which serves brownies and red wine. You can hang out and enjoy the facilities and make a night of it.

-- Kerry O'Day, spokesperson for Bliss Spa

Personally, I like the deep tissue massage

$155 for 60 minutes of treatment, but it's not what you think -- it's more complex than it sounds. Often, people think it's just a massage, but the therapist has to know how to do it properly to get to the second level of muscle. I work out a lot and as an athlete, it's very therapeutic. I just feel invigorated after that.

-- Alan Clingman, CEO of Cortiva, a spa services provider

With our couples treatment, two people can get a Swedish massage side-by-side in a beautiful room -- our only one large enough for two tables that has its own private Jacuzzi, private restroom, fireplace and wide-screen plasma TV. It's $270, which includes 30 minutes of private time after the 50-minute treatment.

-- Tina Ercole, director of spa at the Borgata Hotel Casino & Spa

TheStreet.com has a revenue-sharing relationship with Amazon.com under which it receives a portion of the revenue from Amazon purchases by customers directed there from TheStreet.com.