what is the best belt for my whipple

[blackvenom01]

Hey this question has prolly been asked alot and i looked through the threads and didnt see it answer. I just baught an 04 termi with a 2.3 whipple pushing round 615 horsepower. It currently has a gaterback belt that has some frays on it and it squeeks at times too. I have heard that gaterback is crap but also heard its good. What do you guys think the best belt will be or is.

Thanks