If you are going to hold or invest a crypto currency then you can determine in advance how long you will hold or invest the coin, whether it's a long-term investment or only a short term investment. If you want a short-term investment, bitcoin is still the right choice. Bitcoin is still the belle of crypto currencies that control the price movements of other crypto currencies. But if you invest with a goal for the long term, you should choose to invest or hold ethereum. Ethereum has more potential for the future because ethereum has proven to bring real benefits. Other than that, as an ethereum crypto currency it is an almost perfect coin in blockchain technology.