Porters awesome! I fly every other month to Montreal and I notice a big difference between the airport hassle at Porter and Pearson.
I only wish they flew to Vancouver (which I also fly to often). The lines are short and the little perks they provide are great. Nothing better then enjoying a cold Steamwistle on the flight home after a long day. My only warning is that when it's windy the landings can be a little crazy but I've never felt in danger.