I was first introduced to Thai food about twenty years ago at the former location for the Thai Shan Inn. I rediscovered it after they moved to their new location on Dufferin. The ambiance is nice and quaint and without any excessive frills. The focus is on the quality of the food and the family-run business does not disappoint.
The Pad Thai is saucy in its savoury and sweet tamarind based sauce. The mango salad balances out the tartness of slightly out of season mangoes, with the sweetness of bell peppers and red onions, which have been dressed in what I assume is a rice vinegar based dressing with sugar. The chicken satay with the obligatory house made peanut sauce is devilishly good. The broth in the Tom Yum Kai is a piping hot bowl of sour and spicy heaven on earth.
I've tried other dishes and so far the only one that I'd recommend people avoid is the plate of spring rolls. They have a nice filling of glass noodles but they're so greasy, they're inedible.
This is one of the only restaurants that I'm willing to drive into from the suburbs. Make sure you bring a group with you as the portions are absolutely huge!