[JKnight]

Wouldn't waste your time or money with the CPP stuff. It's not bad, but won't help fill 18" wheels and is basically stock replacement performance. Feel free to price it out vs. Kore3, but you'll probably find the superiority of the C6 stuff is worth the additional cost. Benefits of a C5/C6 system for a street car are numerous. Good/Great performance, 13+" rotors help fill the wheels, diverse pad selections, rotor upgrade options, easy emergency roadside repair/parts replacement availability. When front and rear are used, they are a proven combination that will work together nicely.

If we're talking a bit more technical or track-focused...I don't know if most would consider the C6 rear brakes fully up to the task of track duty (depends on how hard you really use them or how much your car weighs), but the floating design will help if you do visit a track occasionally by limiting the pad knockback issue many of us have experienced with fixed caliper rear systems.