Have been to sushi tei several times over the years and it has been consistently good. There is more traditional Japanese dishes you do not find at most Japanese restaurants nowadays. The food is yummy, the service is friendly and my friend knows the owner and staff there which is nice when they give him recognition for being a regular there. We all got free green tea ice-cream even though not everyone ordered a meal.
The also have the really cute booths with curtains instead of doors which I like, but it is sometimes hard to wave a server down because of this. they should have bells or red lights like some korean restaurants do.
The only sour point is the price :s they are a bit more then other Japanese ala carte. 2 pieces of sushi ranges form 3.95-7.95 :s and 18.95 was the cheapest dinner bento box. Nowadays when there are so many Japanese ayce with really good sushi it is hard to justify paying $20 w/o tax/tip for chicken teriyaki, 5 pieces of sushi and tempura.
I know they also have a franchise in Thornhill but I have never been to that one.