If you’re in the region Steve’s Southern Ontario Cell Home Page shows detailed coverage maps, background on the different carriers, and reviews of the phones being carried by each carrier with an emphasis on cell signal strength.

Howard’s Forums is an offshoot of howardchui.com who is based in Toronto. The forum has an excellent population of expert cell phone users and has specific forums devoted to each of the Canadian carriers or a general Canadian area where you can ask questions or look for past answers.