Short story - there is no comparison (at least for a daily driver), the Centerforce DF is far superior.
I wanted to upgrade the input shaft (26 spline, I'm hard on input shafts) in my KB 04 Cobra, and of course, that meant a new clutch. I ordered a Spec Stage 3, had the input shaft installed, I installed the clutch, and then took it for a ride. The pedal feel was close to stock, and the clutch held fine. But it chattered on take-off (from a stop), and nothing I could do would help it.
Two weeks later I took the Spec out and installed a CF DF. The difference was night and day. Like the Spec, it seems to hold fine (then again, the stock clutch did fine on the dyno and around town - haven't been to the track yet, which will be a real test with the KB). Pedal feel is noticeably better than stock, in that it is lighter. The best part is that it is just as smooth as stock. No chatter, no fuss. I love it, and would highly recommend this clutch to anyone looking to upgrade.
I wanted to upgrade the input shaft (26 spline, I'm hard on input shafts) in my KB 04 Cobra, and of course, that meant a new clutch. I ordered a Spec Stage 3, had the input shaft installed, I installed the clutch, and then took it for a ride. The pedal feel was close to stock, and the clutch held fine. But it chattered on take-off (from a stop), and nothing I could do would help it.
Two weeks later I took the Spec out and installed a CF DF. The difference was night and day. Like the Spec, it seems to hold fine (then again, the stock clutch did fine on the dyno and around town - haven't been to the track yet, which will be a real test with the KB). Pedal feel is noticeably better than stock, in that it is lighter. The best part is that it is just as smooth as stock. No chatter, no fuss. I love it, and would highly recommend this clutch to anyone looking to upgrade.