The spa at SSR is excellent!
I've done the pedicure...very nice!
DH has done the 50 minutes relaxation massage...he loved it!
Dsis did the rejuvenating facial...she loved it!
Dniece did the My First Spa Experience, which included a 25 minute massage, a 25 minute facial, a manicure and a pedicure...she was in heaven!
DH and I are getting the relaxation massages next Monday while we are there.
The thing that was really nice about the spa was the locker rooms...the Disney touch is all there, too. I like the jacuzzi in there too! It's very relaxing and quiet...no kids!!! The first time I used the spa, when I walked in there was a woman sitting in a lounge chair by the jacuzzi with a robe on and a nice book in her hands. I thought...what a wise woman!!!
If you have any questions you can always call the spa directly. They've been very helpful when I've called and asked questions.
I can't speak about any of the other spas on property though...sorry.
Here is a link to the brochure for the spa at SSR.
http://adisneyworld.disney.go.com/media/wdw/images2003/nonlanguagespecific/resorts/home/SS/spa/SaratogaSpringsSpaBrochure.pdf