In the year 2018, I prefer to invest in the Ethereum, NEO, and Stellar. The coins I think is very good and has great potential in the market. This year the coins fall very far if compared with the end of the year 2017. But some of the researchers believe that there will be a resurrection at the end of this year.
As for me, this is a very good choice. However, I would like to add to the list of the potential gainers some other cryptocurrencies. I believe that Komodo and Cardano prices will grow. I like TRX as well.