I'll take either the C5 or C6 ZO6 over the ZR-1 any day of the week. Sure, the ZR-1 is rare, but i'm not a collector, so that doesn't matter to me. I'm all about the drive and at 6'3", the C4 and I just do not get along, lol...

besides, the ZO6s are beasts, especially that C6!