Great atmosphere, great food. Noodles are the best I've had in Toronto, they're like... actually chewy. Pork is delicious as well, and I love how you have the option of loading your soup up with pork fat (light, regular, rich).
Only downside: potentially long line. If you get there between 7pm-8pm, expect to wait one hour. In general I only go there either late at night or at 11:30am when there's no line up.
I usually get the Extra Pork Kinton Ramen since you basically get 3x the pork for 3 more dollars.