x3 on the Kore C6 setup. Just completed it a couple of months ago. Yes, it is a bit on the expensive side, but I guess it depends on your overall plans. They have been perfect and once I got through the issues with the Willwood MC (see other post), I am VERY happy! Installation was pretty simple overall. I almost need to wear a pair of goggles to catch my eyeballs if I smash the brake pedal! This thing stops!
Oh - And Tobin and the Kore3 team were great. Besides the initial assistance, I had an issue with one of the caliper pins and they overnighted a full set of 4 pins and seals. Issue resolved! Would happily buy again.