I disagree with your turn speeds. TMP is a lot faster even though (according to the respective websites) it has one more turn.
I ran TMP…1.864 miles @ 1:27.4x… 76.79 MPH
I ran Dunnville…1.375 miles @ 1:20.5x… 61.49 MPH
I dislike both courses equally as much (not that I am saying either is BAD), way too much 2nd gear action at both. But once you figure in the price it is a no brainer.