For me, both are equally good for investment considerations. But clearly seen in the volume of bitcoin, bitcoin is the one that promises to be worth the investment. It's just that for some people who are constrained by unlimited capital, Eth can be a good choice. Considering that in the past I still couldn't play in bitcoin, I jumped into ETH first, and everyone also knows that ETH is a fairly stable value at this time
I like to invest in both but not because if I have low capital, if I have low capital I will still like to invest more bitcoin than ethereum, both are good but bitcoin is my first. Ethereum is not bad either, I like them both, I still go ahead and invest on binance coin which is a very good coin. These three coins are very import because they are the three main unstable coins I have most on but my bitcoin investment is most.