Well I think after bitcoin ethereum is the next in line, though I don't always look at altcoins but I consider Ethereum been the best among other altcoins, am pretty sure that everyone will like to make ethereum their favorite altcoins, the reason why I choose ethereum over other altcoins is because ethereum is good for long term holding and it also has a good potential.
I agree with you, Ethereum is the most valuable coin after Bitcoin. Ethereum is on top of all the altcoins. We have also seen the Ethereum coin go up and down with the rise and fall of Bitcoin's value. Not everyone will invest in Bitcoin or Ethereum as I say or as you say because the needs are different for different people. Some want profit in short term and some want profit in long term. By the way, I have invested in Ethereum myself, I am hopeful that holding the Ethereum coin for the long term like Bitcoin will give a good result in the future.