I highly recommend this one:
I am 90% sure I'll go, maybe even with a new wheel+tire set up. These are pretty good events with high-quality instruction (although it depends on the instructor you get, but almost are REALLY good - I once got one that could have taught physics to a monkey, he was so good with explaining things).
I'm also going to this one with my bro (not Mosport, but close enough):
Let me know if you decide to go to one of these.