Had dinner with a client last night at Ki. The service and sushi were great. We started with the Edamame and Bistro Shrimp (spicy wasabi dip is excellent) followed by spicy salmon, tempura butterfish, Ki beef maki, and dynamite rolls. The dynamite roll was probably my personal favorite.
The one downside to Ki is that it is a hangout for suits in the financial district. We had a reservation so we didn't have a problem, but overall the place was packed. Additionally the noise level was extremely loud.
Food trumps the crowd and noise in my mind however. I'll definitely return once I try all of Toronto's other fine restaurants.