I'll be in Toronto for the next 5 days and was wondering if anyone had some tips on where to go for cool/used/new gear? (Looking for anything cinematography related)
I couldn't find a post anywhere about this already...

Matt, you can check-out DV Shop or Vistek. If you need to rent cameras you can try Videoscope or SIM Video.

I second Noel's recommendations.

I'll third the recommend for Vistek. For audio, Trew Audio on Villears St is the goto store for professional audio for film and video production.