Kim Dinh is properly one of the better viet restaurants in Markham. Their beef noodle soup is always consistent because of their soup base and tender beef (I usually go with cooked beef) Spring rolls are also well fried with lots of ingredients wrapped inside! Curry and Roti here is also one of their signature items on the menu! Only downfall for this restaurant is the horrendous customer service, but with the quality of food and the relatively cheap price they charge, I didn't care about the bad customer service much.
If you want a cheap viet meal in Markham, I highly recommend trying Kim Dinh.