My favourite sushi place that I recommend to everyone is Mi-Ne Sushi. I have a soft spot for the downtown location because that was the first one I went to, but the Markham one also does not disappoint. I do think the dinner menu is more well made than the one time I came for lunch, and while on the pricier side, it makes for a nice treat when the sushi cravings come.
Their rice to filling ratio is one of the main reasons I think their food is so delicious.
Waterloo is full of AYCE (all you can eat) Japanese restaurants, the majority of which serve primarily sushi. However, if you’re willing to spend a little more to get better quality food, definitely check out Kinkaku Izakaya, located across Kitchener City Hall.
I heard about Tomo Sushi nearly 3 years ago from a co-worker; she lived nearby and said it was one of her favourite places for sushi, and everyone she had brought there, regardless of what they thought of sushi before, loved it. Being a little out of the way from me, I never had the opportunity to try it until now.