I think ZenCash (
https://zensystem.io/) could grow a lot, they are only about a month on the market, but their team seems legit and it tries to solve the privacy and biased decentralization problems.
edit: Just my personal speculation, not an investment advice.
I'm not sure why their PR manager is so shy and don't try to fix something when price starts to decline..They have power and can do such things. In Global this is good project yet in early start and it is very cheap. I'm considering to create one node when they finally prepare code, maybe one day they become like DASH..
Buy when everybody panic. Sell when everybody are hilarious..
Everything is hilarious right now!