https://bitcointalk.org/index.php?topic=583449.1340"So we can see as it is currently structured, CryptoNote doesn't really support anonymity much.
Sorry to blow holes in your enthusiasm. Reality sucks if you haven't taken the time to do some serious work before launching."
Thanks Brilliant.
His main point seems to be IP address tracking and blockchain pruning.
I think that both Zerocash/coin and Monero have the pruning issue, however how can they not? It's apart of the design and perhaps some super genius can one day work it out.
The negatives are not too bad. Monero is meant to be splitting payments into different amounts already.
Zerocash is still trusted and therefore unacceptable and AnonyMint also said that CoinJoin/DarkCoin is so far removed from the capabilities of Zero and Monero that it's not even in the same ball park.
So we are left with two current contenders, Monero and Zero.
Zero is somewhat trusted, so that is out.
All that is left is Monero.
Monero is broken if the NSA can crack the cryptography, the same cryptography that protects every bitcoin address.