I've been eating at Pam's since 2005, and have eaten at most of the Roti restaurants in the downtown area, but Pam's is my favourite. I've never had a bad meal here and Pam herself is lovely, and I find it shocking that other people on Yelp have said she was rude to them, as I always feel welcome when eating there.
The food here is always fresh, hot and delicious, which is why you usually have to wait a bit to get your roti as they make it fresh for you. My usual order is the boneless chicken roti, the roti bread has a nice texture and the chicken is cleaned well (no nasty bits of gristle, etc). They have great vegetarian rotis as well, which I order when I'm not in the mood to eat meat, usually I get the channa (chickpea) and potato roti . I also like the veggie pakoras with chutney and the homemade pepper sauce is great if you like it hot and spicy.