I've got to agree with Julian, but in the spirit of the question, here goes:
PM Pros:
-Powerful motor
-Quick release
PM Cons:
-Price
-Motor mount is a pain
Debatable:
-Guides
-Fence
-Work light
-Service
If you are unhappy with the performance of the Griz and are expecting something more out of the PM, you're going to be very disappointed. The actual performance of a 14" CI bandsaw will really only change subtly with motor power. Beyond that they really are pretty much identical.