The Snail makes up the triumvirate of comic book stores in Toronto for me. If I go to The Lounge for the atmosphere, The Beguiling for my comics, then the Snail is where I go when I need anything else. Toys, T-shirts, special editions, the Snail specializes in all the tools and accoutrements you need as a geek in the city.
That said, if you don't have a LCS, then the Snail also would be more than adequate for you with a great selection of trades. No idea what their subscription policy is.
Plus the staff is always pleasant and willing to help out with your questions.
And Luthie makes the best Nutella Latte in the city, definitely grab one while you're there!