I believe that it is necessary to keep at least promising 4-5 crypto-currencies, which are at the very beginning of the top 100 by capitalization. of course, EOS is included in this number. he overtook Litecoin, rising to the 5th line of the rating, which made investors interested in it. 
I agree that we should have investments in the most promising coins. Unfortunately EOS is not on of them in my book. I have not scratched EOS, but decide to give it some time and see how will develop, because I don't see much except the speculations.