I'm a huge fan of Touhenboku, starting from the Queen St. location. They make their own ramen (at Queen St), so you can really taste the love and distinct character of the noodles. The broth is amazingly rich. i always get the RED spicy ramen, and love that they include a full soft-boiled egg, mushrooms (a nice touch!) and green onions.
On top of the food, the servers are always friendly. And their mascot is the icing on the cake.