Well, what do you intend to hunt with it? Rabbits, coyotes, or big game? I don't know if the standard .223 is a legal big game cartridge in Ontario.
Well, the usual list of NR rifles is SU-16(.223), Just Right(9mm, .40, or .45), Thureon Defense(9mm), XCR(.223, 7.62x39, .300 AAC, or .308 I think), ACR (.223), or Swiss Arms (.223). More or less in order of price.
Again, what you intend to hunt with it might change available options.
You might be better off getting a Norc AR for the range for about $500, and then a separate hunting rifle.