To my mind, Toronto has one of the best China Towns of any city, in fact better than the more noted ones of Los Angeles, New York, San Francisco or that of Sydney, Australia. It's easy to get around and besides just simply being nothing but Chinese, also has areas of Korean, Malaysian as well as a surprisingly large area of ethnic Portuguese enclave. So when touring the area you are easily able to explore other ethnic areas as well.
Toronto's China Town offers shopping bargains galore, all sorts of markets loaded with varying goods include some of the most exotic of fruits and vegetables and the best of what are real authentic Chinese restaurants with hardly any of them including those cheap American New York styled Chinese crap such as General Tao's Chicken. Yuck!
Better yet, the neighborhoods have greatly improved over the years, now having become rather upscale due to the relocation of many of the locals brought about by the gentrification of the former hippie areas of Yorkville or formerly impoverished areas of what is known as Cabbagetown.