Which restaurant in Toronto do you consider to be the best for the following type of cuisine? (assuming mains are priced anywhere from $10 to $30).
Why not use the search function and compile a list? ;-)
Some people might not be replying to your thread because many of the "best" restaurants for the cuisines you've listed have been discussed ad nauseum. Include "best" and one of your cuisine types in the search, and you'll find lengthy "best of" threads that usually result in 2 or 3 board favourites having the most recommendations.
Lots of Chowhounds have already spent a lot of time voicing their opinions re: the best dim sum, Thai, Mexican, Greek, Italian, Polish, etc.
Here are some threads which will lead you towards the Board favourites for the cuisines you've listed:
Best Italian http://chowhound.chow.com/topics/101326
Best Greek http://chowhound.chow.com/topics/728126
Best downtown dim sum http://chowhound.chow.com/topics/739620
Best churrasco: http://chowhound.chow.com/topics/512616
Feel free to add a reply to any of the "best of" threads, to revive the conversation, or ask for more specific recommendations at your price point.
Asking us to fill in the "best of" for the list you've chosen, feels a little like you're asking us to do your homework, teacherfoodie!
One more vote for Zen, Japanese.
Indian: Once again in Scarborough, Karaikudi.
Thai: The one I like is in Richmond Hill. Thai Basil. Nice decor, good service. I loved their chili basil fried rice. They have a location in Toronto also, but not been there.
BTW, Portugese is repeated in your list:)