There are now articles that are giving an idea that ETH is the best next coin after bitcoin as an investment.
There's no reason to believe either will not do well this year.
Too early to say this but I'm all in for bitcoin.
Bitcoin has limited supply, and Ethereum has no limit supply. if the prices are depends on the supply and demand, bitcoin will always take a lead in investment, while Ethereum will be doubted without strong development of ICOs, because ICOs are which make Ethereum becomes famous.