As a denizen of the downtown, I can suggest a few choices:
167 1/2 Church - Advertised as "Unforgettable", you can search massageplanet.net for previous reviews.
213 Church - a sister MP to the one at 167 1/2
Both are pretty rough inside, and hit or miss re: quality of MPAs.
I've also been to Combowa at 77 Gerrard St W., which is an Oriental place similar to some of the Tui Na type operations. No extras, but pleasant MPAs.
As Romeo says, don't expect the Ritz, but you won't break the bank by going and you might just run into a couple of the gems - it's always an adventure!