I would say ETH, it has huge potential growth. The competitors are a long way behind, and whilst they may also be successful, ETH has a big established presence with the EEA.
Of course ETH. The other is nothing as compared to ETH. ETH has a firm status in the market and is popular as well. SO when the future expectations are high, people will go for investment like they are doing now to maximize their future profits. ETH is already demanded by so many people and you will be surprised to see there are as many as 1.3million ETH wallets in the blockchain if you pick the data for 2017.