pulleys

I've been looking at underdrive pulleys. the problem is i dont know which one to get, aem or unorthodox. unorthodox is more expensive b/c it comes with a crank pulley and aem doesnt. aem claims they dont make a crank pulley because they say messing with the harmonic dampener is really bad for the motor. which one should i get?

Unorthodox all the way, those pulleys are awesome man.:D

Yea just leave the crank pulley alone. I've always heard the same story too. But i have heard good things about unorthodox too so i wouldnt know which ones to get.