Well, for me ripple will still be the top coin to hold for next year. followed by IOTA, Litecoin, Cardano, and probably quantstamp or ethos. Just by looking at the trend of increase these coins are having you'll get a good impression which will be profitable and not, My top 4 coins are the coins that are already considered part of the top 10 stable coins while the last are what i can say as the wild cards.