You'd have to be an idiot to use Zerocash, considering who funded the research.

This^^, Zerocash has too many flaws. Rather use Darkcoin.

Zerocoin and Darkcoin have flaws.

Monero on the other hand...

Don't act like Monero doesn't have flaws. Refer to Anonymint's posts in the Monero thread.

lol AnonyMint again, he even said Bitcoin is flawed many times. Should we listen to him, abandon all crypto and back to use fiat ?

Bitcoin will become susceptible to attack if a quantum computer is ever invented.

Every coin is vulnerable to quantum computers.

Right. That doesn't mean we shouldn't use them, but it is something to be aware of.