The blue chip truck has amazing poutine. I don't know about anything else they serve because I've never tried it. Most of the price of a poutine order is the real cheese curds. Delicieuse. I usually try to share it with a friend since that lessens the caloric hit and because I can never quite finish a whole one.
I also find that they put on a little too much gravy for my tastes, smothering the bottom layer of fries. I keep meaning to offer to pay extra for a second cardboard boat for them to put the gravy on, but I'm usually too shy in the moment and forget. One day.
In summary: POUTINE POUTINE POUTINE