According to me Ethereum, NEO and Litecoin are the best 3 Altcoins in the current cryptocurrency market and these coins going to make crypto investor rich in year 2020. that what my strong feeling.
I agree with you only in the part of ETH, he will definitely remain in the top 3 in 2020! But NEO is not sure, they need to do a very serious job for this ... Also, I think that bitcoin can quite hold on to the leading positions and stay in the top 3, not the fact that on the 1 st place ...