ETH is also a good choice now to convert, but it's not the way to invest or at the moment. I wonder when you buy BTC at what price?
Currently I am converting all ETH and my Atlcoin into BTC, currently the market is gradually returning I will hold the BTC and wait for the end of the year.
Ethereum is included to the top cryptocurrency which have potential, popular and second to the highest value. But i think Bitcoin is much better than Ethereum so for me its not wise to convert your BTC to ETH because it is much profitable and valuable. BTC is remain to be number 1 even there dropping price in the market and it will remain popular because everyday many people are getting interested to it. Also Bitcoin can bring you huge profit and goood for holding for long time.