We were members of both clubs for 5 years but I let the memberships lapse because the sites we enjoyed most were not affiliated. Didn't even have time to read the mags which stayed in the plastic. I was disappointed with the CC&C mag, the CC mag is much better.
I'll join either again if we intend to stay on one of their sites.
We belong to both clubs for the insurance and breakdown, also the ferry booking service. I do find that CC sites, whilst being very high standard sites, are getting very expensive. Even some of the CL's are going the same way.