I think 2018 will be the year of fully anonymous coins and untraceable transactions. (
Zcach is already hiped, but other coins will go aside)
I'm investing in fully anonymous solutions right now:1.
Zoin is doing well:
https://zoinofficial.com (They have really hard working developers, I have been following them since September)
2.
BitcoinZ:
https://btcz.rocks/en/ (The community is growing very fast and the coin is healthy)
3.
Ethereum Meta:
http://ethermeta.com/ (It is a new project but the idea of using untraceable transactions for building Anonymous E-Market Platform is amazing!)