This is my go-to Thai place in the city, my favourite for sure! I've been to all the other Thai places but Pai has THE BEST Pad Gra Prow dish. It's a rice dish that you can make mild, medium, or spicy. I usually get mild and it's tolerable with just a little kick of spice. I've tried medium once and you can taste the spice at that level so if you don't take spice very well, you will not enjoy the medium spice level. I usually order the Chicken Pad Gra Prow and it never disappoints! I've probably ordered this dish 15 times now. I've tried this dish at other Thai places and they don't make it as good as they do here!
As for the other dishes, I've also tried the Pad Thai which I think is average and the Green Curry which I think is made really well here too!
The line can get super long during dinner time so best to make a reservation if you can. Otherwise, there's usually a walk-in wait for about an hour during prime dinner time. You can leave your name and number though if you do end up walking in and just hang around Queen street and do some shopping until they give you a text.