I think Ethereum will below 200$ in the end of this year , Because there are some coins with very good technical, ready to kill Ethereum. It's just a technical coin, it will replace by another better coin.
What is the advantages of Ethereum: fast transaction, low fee, smart contract, Dapp. You can search in the market to see the better coins which have more and more than about that

Except Bitcoin, I always believe Bitcoin is 1st forever.