I previously asked a question about CMS compatibility with Synergistic Research Base. After much experimentation, I'm thinking about full compatibility and complementarity! Great!
To date, the results have been obtained in my system (each component was seated for more than 10 days):
DAC Esoteric D-02 - CS2M is the absolute top!,
Monoblocks Classe CA-M300 & 400 - CS2 are the absolute top!,
Transport Lumin U1 - all the feets I tested are worse than stock ones, including CS2M((,
PS Audio P10 regenerator - all feets tested by me are worse than stock ones, including CS2M((.