Although EOS community grows so huge as well as its price, it would still undergo too many hindrances and doubts. And yes it have the most possibility to be the next ETH, and as long as it still that much costly, we must buy it and sell it soon after years.
EOS is still in a premature space and therefore massively overvalued. Ethereum has the biggest mindshare right now, the most developers and there are scaling solutions in place too.
Ethereum is the next Ethereum, at least in the near and mid term future.