My pick for the year of 2019 is ripple, stellar, tron, and ethereum. Among them, ethereum, ripple and stellar are very good for investment in the long run. Although ethereum has declined to its lowest level in the past one year, it is just to rise again. Ethereum is the only and best coin in the market. I think ethereum will rise to the point where it will beat even bitcoin.
I'd go also for Ripple but only for 2019, not for a very long time because I still have doubts with ripple. Stellar is quietly sleeping at the moment and maybe 2019 is a good year to wake up. I'd go for ETH even for a very long time BUT, it should be at around 700$ to beat BTC and that's so much hardwork for now.