Felixo.com is pretty good volume.
Indeed, the volume of transactions that occur in felixo is quite good, but honestly the partner is only CMA / flx without other more common pairs, I personally still hold CMA coins, but I am still very hesitant to make transactions in felixo because previously I had never done a transaction In these exchanges, so, better save the CMA I have and hope there will be a large exchange of CMA listings in the future.