Monero is one of the best privacy coin. I think we all know about this coin is untraceable transaction.
several investors have used this coin for their transaction and they believed about this coin is really good privacy.
That's good , but every coin has own character.
I also heard about negative issue, this coin will be blocked at several countries, because it is feared that it will be misused for illegal transactions. I hope it's just gossip.
I think It depends on you to choose which coin to invest.