if you make enough power to warrant a 6 puck clutch, then don't cheap out...spend the money for the segmented RPS flywheel. it's been pretty well documented that hard use of a 6 puck clutch on the Fidanza's steel plate WILL eventually cause it to warp. mine did, and I ran it for less than 2k miles (I had the ACT 6 puck with the Fidanza). however, if you aren't going to need that extra bite from a 6 puck and can use a street disc instead then you might save a few bucks and get the Fidanza. bottom line though is that the RPS is a better product. ;-)