Well, I'm a Shiatsu therapist and learning Swedish based massage atm! I've found Shiatsu more beneficial if you are 'in tune' with your body as it rebalances you (also, one of my clients is a physiotherapist who says Shiatsu had a better effect on his tense shoulders than any other type of therapy he's had). Obviously like Swedish massage or I wouldn't be learning it! Never had a Thai massage so can't comment on that.