In my opinion, a potential coin for the long term is a row of coins that become the top 10 of crypto currency coins, including ethereum and ripple. But I catch a good signal from ethereum to compete with bitcoin later to fight for the position of the king of crypto currencies and to control the price of crypto currencies. Ethereum has technology that is estimated to hold benefits in the long run. I also couldn't stop being amazed by the technology brought by ethereum. Although it is younger than bitcoin but ethereum is able to compete and last a long time on the market.