I, personally, am sticking with Ethereum.
I have some eth but I'm not only sticking to ethereum but mostly I'm sticking to bitcoin.
The rumor said about eos is an ethereum killer has been labeled to it by the community. Whether it is an ethereum killer or not still they are different.
I'm not updated with some of its update but only with the mainnet lauch.
I do believe in EOS and I believe it has much more to offer so let's just wait and see how it all turns out.
Every altcoin has something to offer but can you justify why it has much more to offer?
You don't need to focus in one altcoin it's better to split your money in different altcoins. Ethereum and Bitcoin are both well, it have a great role in crypto world than others. Honestly I am sticking with ethereum and Bitcoin. EOS are having a similar smart contracts with ethereum and I think it would be good.