It depends to the situation. And you should think first of what is more reliable if it is bitcoin or ethereum.And Ethereum is good way to earn profit, but as you can see bitcoin is pumping in the market and being the number 1 in all cryptos thats why you should base it imn the situation of it. Because even though bitcoin is the king of crypto it doesnt mean that ethereum is under it in fact ethereum is rising and increasing in all areas. But with me, bitcoin really is the best coin to invest because it was proven trusted and still dominating arround the world,  These two coins offers everyone a better future if we will invest time and money I know that we will soon reap the fruits of success from it. In terms of market cap ETH follows BTC and I think this coin has potential too and I believe that people believing on this coin has bright future especially if they are going to hold much of it and wait until they will get a lot of profit.