NFR - Canadian Exchange

Anybody who has been / goes to Canada have advice on how to handle money exchange? Am I better off to exchange here, there, or just spend US $ there?

Thanks in advance.

Report to follow. On the fishing, not the exchange rate...



Banned or Parked
Go to an atm when you get there; it's the easiest way in just about any country. If you try to spend US dollars outside of a major tourist center, you won't get a good rate if they accept US currency at all.
When I travel, I normally just use an ATM when i get there to get local currency. I have found the the exchange rate works out best that way. Go to your bank when you get back to change back to US. Those little booths at border corssings or airports take a huge percentage.