I'll go for Ethereum and Ripple. These two coins have all the qualities or makings needed by aspiring investors for possible investment. I am a 100% believer in Ethereum's blockchain technologies capabilities. "Exciting developments were about to materialize in Ethereum's blockchain technology that could revolutionize business and society", as Billionaire Eric Schmidt, the former chairman of Google discussed. I think he was referring to upcoming Ethereum's upgrade. His views only strengthen my beliefs on this coin.
Ripple on the other hand was already being trusted by major banks and financial institutions. To be trusted by serious firms as such was a strong indicator that Ripple is a capable product. No wonder why this coin surpassed Ethereum's market cap and took over the number 2 spot in crypto market.
Invest on these two major potential coins now because in the long run, enormous values are certain to happen.