yes Both cryptocurrencies are trustworthy and they have something to show for. BTC is the pinnacle of everything and ETH is following closely behind with its vast possibilities for using its blockchain. Personally, I would choose ETH over BTC, in case I would have to use it for transactions too (fees are relatively low compared to BTC). But solely for investing for long-term holding, I would choose BTC. You can also do both. For example, buy maybe 80% BTC and 40% ETH or something like that and But you can invest in bitcoin too. Both coins are very good now but which is better? It depends about your budget