Yes I agree with you on that, ethereum is the best crypto coin after bitcoin. Its popularity has grown recently due to the smart contract base functionality that it possess which is being used by all ICOs as their payment blockchain and that has really been the huge boost behind its success.Due to its high demand and usage, it has helped it in giving a stiff competition to bitcoin and that why it could retain the second best coin. So ethereum is a coin with a very great potential and a great future and all I see in the future is that it can even displace bitcoin in some years to come.