Porter is the only way to fly. Security is quick, staff is friendly and the lounge is relaxing. They also offer complimentary water, soft drinks, coffee, tea and some snacks. If you're hungrier they have sandwiches and salads for purchase.
Now that they've built the pedestrian tunnel it's even more convenient and easy to make your way to the terminal.
The flight prices can sometimes be more expensive than flying out of Pearson but watch out for their sale prices!