If you do some searches on the board you'll find that there is a general lack of good mp's downtown when compared to other areas of the city.
It really depends what you are looking for. I find that you can get a good massage with a good release at Combawa, 29 Bloor St E, and at the mp on Adelaide (I forget the name). The attractiveness of the attendants and the mileage vary greatly though.
If you are looking for consistently beautiful women with high mileage and a good massage, it is tough to find downtown. There are also some real dumps downtown.
Be patient and search the boards and you will find out more.