You still doubting bitcoin? Or are you looking for altcoins?

There is no doubt that bitcoin will remain the top crypto in 2018 and the momentum it got right now will just be carried over to the next year so it will still perform better if not better next year. As far as altcoin, Ethereum will remain in the top, because of ICO's while a few like BCH, Monero, Ripple and NEO will also perform good next year.