Ethereum is at the bottom last months and it will be very wrong to sell it right now. By all indications, strong growth of all cryptocurrencies is possible in the near future, first of all Bitcoin with Ethereum. So, I would hold Ethereum for some time.
Guy, How long will you hold your ETH? Will you hold it and wait eth reach 1000$ like last year? I think if you get profit already, should sell them and hold btc.