I've been here a few times already and I must say their food and service is consistently good. They serve omakase ($80) and I must say it's definitely worth it. Aside from one incident when I wasn't done binging on nigiri and the waitress gave me my ice cream and I tried explaining to her that I wasn't done with my sushi fix but with the lack of English she spoke and my lack of patience I gave up and ate my ice cream misty eyed.
The environment is a little sterile and I feel bad for even breathing sometimes but I think it might be because they want you to focus on your food instead of being distracted with everything around you?
There was once this couple pulled out their phone and watched a baseball game on loud during dinner. I was super irritated as much as I am a fan of any Toronto... the whole restaurant (it's already tiny) does not need to be filled with the commentator's voice.
I prefer Yasu over Zen and Yuzu... Have yet to tried Kaji as I heard that Yasu used to be with Kaji. I would definitely come back (already have two reso booked for the next two weeks) - booking is super simple but you can only book up to 4 people and with a credit card. Ugh, I cannot wait until Friday!