My whole family has been coming to this local Danforth bike shop for decades. The owner still works on bikes himself and will always greet you with a warm smile and a strong handshake.
They offer quality bikes and quality service. Whenever I have a small problem, they will most often just fix it on the spot in a few minutes and send me away without paying them. Whenever I have something to replace or if the fix in a bit more serious, they'll usually have it done in 30 minutes and at a very reasonable price.
This is the one bike shop that I trust the most in Toronto and will always be the place I return to over and over.