Barrie is pretty rough IMO, I've been to I think all the best places in barrie and none of them have been that great (backfitness was the best I can recall lately..). Olympus seems nice but the prices are a bit high IMO, jasmine's spa is good from what I heard if you can actually get the owner. I've been there once and it was pretty subpar and I've heard similar reviews about the other attendents.
From what I've seen lately theres nothing worth spending your money on for Barrie massage, if you must I'd say go to Olympus but its pricey and I'm not sure theres much milage.