The CM, being a twin disc, will be much more comfortable as compared to the 6 puck. Engagement shouldn’t be as grabby with the CM and the pedal feel shouldn’t be too much worse, but I haven’t asked anyone about the pedal feel because it’s not something I’m personally concerned about.
Keep in mind that if you’re daily driving, the twin disc life will more than likely be similar to the 6 puck if I’m not mistaken. I personally plan on keeping the 6 a weekend car, so life isn’t an issue for me. Just another thing to keep in mind when you’re buying.