1. Ethereum - it is the number two crypto and it is valued at 10% of BTC price and I think it will rise to least 30% of BTC price by the end of 2018.
2. DeepOnion - excellent anonymous/privacy coin with great set of features and supported protocols (TOR, OBFS4, MEEK and as I read somewhere Stealth addresses in the next few days)
3. Cardano - it has great team behind it and it is strongly ranked Nr. 6 on CMC overall list (10B market cap)