There are many altcoins operating in crypto market now. But among them only two seems to have bright future, means they will have you good returns. Bitcoin has shown its potentials in the last three years. It has travelled from $1000 to $19500. No currency has shown such performance in years. Bitcoins target for 2018 is $40000. If bitcoin is gold then Ethereum is immediate silver. Ethereum work almost on the same platform of bitcoin currency. It has shown considerable progress in last one and more year. Many countries are banning bitcoin currency due to some security reasons, secondly bitcoin`s volatility is a major concern for its investors. In that case Ethereum is the best option for these investors.