I prefer for ETH because much worth it and much profitable. But if you want to know which is better then compare this two crypto by buying each of them. Then after that you will know which is better ETH or EOS. I suggest make some research about this two crypto and read some article about it then if you which is good then buy it, dont waste your time for choosing because you already know which better to this to crypto. It s better to choose crypto which more people are interested or have lots of supporters.