As a massage chain goes (which doesn't really even make sense because every massage therapist's touch is different, so you can't exactly guarantee the same service no matter where you go), I've always had a good massage therapist.
The membership deal is an interesting idea, not something you can get anywhere else in town.
My only beef is that the massage rooms are too small. My massage therapist was banging into the wall while moving around the massage table. It was a little on the claustrophobic side.