I think it's ETH. Ethereum is flunctuating at this time, the bear is resurfacing also. There are bargains on various exchange on quality coin and as for me, I will be buying more ether in the days to come! No matter the cryptocurrency market condition, there exust the money to be made as always!
Choosing what coin you want is very tough though Ethereum been around for a long time so it should be okay to invest in.