ETH and BTC are two completely different things, you can't really compare them. They are both different in technological-wise applications and they are different in their economics. You can't really say one is better than the other. If you are between the two (which you should invest in) I think you would do yourself a favor if you invest in both of them. ETH has anyway great potential and the price will definitely move up in the coming weeks and months, and BTC is the number one crypto out there to start with, and it's the most well capitalized one, which means that it basically moves the market (when BTC goes up other coins go up too and vice versa) so it's a good idea to be invested in both of them so that you don't miss out.