I literally live on the same street as Sapporo sushi in a Condo so my 4 stars is given that this is the best sushi place in the area (by that I mean within walking distance). I lived in Tokyo for 7 years, so on that level it would not be 4 stars, but for Yonge/Finch most definitely.
I have always had very good service when visiting Sapporo sushi and they prepare their take-out quite quickly too. They do have bells to ring when you are in the booths so do ring them. This is Korean/Japanese style and some I think expect the servers to come by right away, but they are probably waiting for you to ring the bell.
Anyways, my favorite roll is the Red Dragon Roll, but their sashimi has always been pretty good. The only roll I'd avoid is any of the spicy rolls which seems to be the norm for Toronto period. In Vancouver, they give you a piece of fish with the spicy part on top or in its own place in the roll... In Toronto it is too common to mix the sauce and minced fish which is obviously a way to "hide" the less fresh fish - so don't recommend that here....
Love that they give me miso and salad when I order a roll even for take out and even more importantly, love that they have some Korean dishes so me and my girl can go there more often since she tires of sushi quite easily!