I had my first Porter experience last week. As I frequently fly with many other airlines, I can definitely say that the experience with Porter is very different and in my opinion way better.
First, you have to remember that the airport is on the island and there is a ferry to take. Don't show up last minute or you'll be late if you miss the ferry. Once at check-in, the Porter staff were extremely nice and cheerful (unlike many US airlines and AirCrap up here).
Since everyone is considered 1st class with Porter, once you've checked in, you can make your way down into the lounge, which has snacks, drinks and free WiFi. It's a relaxing environment where you can work or just chill while waiting for your flight.
The flight itself was excellent. You have to expect to feel the turbulence a little more in the Q400 prop planes they fly but it's really not that bad. One of my favourite parts of the experience is that they actually feed you! Remember the days when you got an in flight meal?! Except that the food on Porter is way better. Oh and drinks are free too! (That includes wine and Steamwhistle beer!). What more could you ask for?!
I hope Porter continues to grow so that I have better choice of airlines when I travel.