Monero has been pretty good for the private transactions and so does the zcash. However the Monero seems to be pretty good in hiding the identities at the swap. I have written an article to compare between the Monero and zcash. I am sure you would love reading about the same :) Check out the article: https://hive.blog/hive-167922/@esmeesmith/monero-xmr-vs-zcash-zec https://leofinance.io/@esmeesmith/monero-xmr-vs-zcash-zec