I think Pearl (at Harbourfront) , Dynasty (Yorkville), or Mimi’s (Annex $$$$),Lai Wah Heen (downtown), Kwan (midtown) will suffice for upscale Cantonese food while in downtown Toronto for a business trip, rather than encouraging a business traveller to spend $100 for the round trip to the burbs and spend an hour or 2 in traffic.
Dailo for Modern Chinese,
Sunny’s in Kensington (same people as Mimi’s)
Chop Chop on Dundas West for new interesting mid-level Chinese.
Alma for chef-driven modern Chinese (Alma is near Bloorcourt, it is on Bloor west of Dufferin)
New Sky/ Rol San /Swatow for old school Chinatown. Patois for trendy Caribbean -Chinese hybrid.
I used to drive to Markham or Richmond Hill a couple times a month when I lived near Wilson Ave.
Since moving to the Annex 7 years ago, I haven’t driven up to the burbs once for Chinese food. I’ve been to Scarborough once to meet some Chowhounds at Ding Tai Fung.