Ramen being one of my fave foods, I've had it all over the world, including Japan. I usually go on a crazy Japanese food rampage when I go to places like NYC, SF or Sydney because TO's Japanese food scene is almost nonexistent.
LIke other reviews pointed out, Kinton is authentic but mediocre by international standards. For TO, however, it is the best ramen I've had in the city. Having been disappointed numerous times over the years, (weak noodles swimming in soy sauce +water =broth... yuck!), I had all but given up on ramen in Toronto. Hopefully, TO's enthusiasm towards places like Kinton and Guu will prompt more authentic Japnese restauranteurs to invest in our city!