I'm in both. The discounts available in both can almost fully offset the cost, and the CL and CS sites are occasionally useful. For C & MC discounts see
https://www.caravanclub.co.uk/member...savings-guide/ , they also have a good discount on the M6 toll. C & CC get a good discount at Go Outdoors and various attractions. I've occasionally used the club sites and found the "friendly" C & CC sites to generally be more unfriendly and rule laden than the C & MC ones.
I thought about quitting the C & MC after using their
insurance which is organised by Devitts and was truly awful.