Everybody asks which coins will increase but I would rather ask which type of coins will increase?
I think the biggest increase will come from the infrastructure coins, think big coins that are laying down the future crypto infrastructure that everything else will use, i'm thinking the decentralized exchange coins will outperform next year.
Best infrastructure coins?
BTC ETH XTZ EOS ADA NEO XLM XEM TRX LSK VEN QTUM SNT SHIFT
Wait until we are in a shitcoin season before you buy any alts though

Or you will lose money against BTC