maXbimmer has weekly meets.. same location since 2004 (9yrs). Begins @11pm Friday nights SUMMER only. Starts up around April to late-October. They're located in Woodbridge (voted central to GTA) with easy access to highways, good lighting, no police presence, food/drinks until midnight and best of all... other high-end forums have jumped on board and started holding their weekly Fri-night meets there too (not uncommon to see 1200+hp monsters come out!). Don't know too many people that want to stand around outside in the winter months.
Summer Weekly Meet
LOCATION MAP LINK