I have read good things, and I like the OEM style CV joint the platinum version has. I'm skeptical of these actually being balanced since I've had other quality issues with z1. Though the platinum 1 piece in steel looks like the best driveshaft available for our cars. I've got a machine shop that can balance/ check it for me if need be which I may have them check it just for extra assurance.
Follow Ups
Any issues with balancing on the z1 platinum driveshaft? - Jkova300z12:20:45 05/18/13