Hi there.
EOS are not selling their tokens now. Its a proxy token that will in future be converted to actual EOS tokens.
It is not an Ethereum killer. You think the ETH devs are going to take it and sit quiet like ducks ? No.
But that been said the market exits for both of these platforms. That's what I feel.
Why you should invest? Hmm that's a subjective one. I see good upside but the fomo is definitely going to make it a rocky ride there