Ethereum will remain the king of the altcoins for many years. The capitalization is huge and growing, people keep Ethereum no matter what. With me Ethereum is the best Altcoin for this year because many are very interesting in Ethereum and the reason is that bitcoin prices are a lot easier. Evaporation that many people fear to invest their money in bitcoin. This year has become the year that many Altcoin emerged and have a pretty good development. But my point of view keeps ETH intact.