Pai is very good. It is brought to you by the people that brought you Sabai Sabai (which is one of my favourite Thai restaurants in Toronto). I would recommend going with a few friends. The menu at Pai is best enjoyed family style.
The Chef Nuit Pad Thai is a signature dish and is delicious. It taste homemade. On this occasion, I paired it with a Thai milk tea which I would recommend.
The price is slightly higher than other Thai places but it is fair for the quality you are getting.