The first 20 on the coinmarketcap list are already accepted by the world and have not empty words and ideas. They will be the most perspective in the future.
No doubt Ethereum has a lot of investors and they are supporting it with full effort, as we have seen in many places Ethereum is getting huge potential and value but I have some different thinking that bitcoin is above ethereum as it has more feature that Ethereum and bitcoin has more investors than this, for me bitcoin is the coin that has best and bright future in this era. It is safer than other altcoins and bitcoin has a lot of wallets so we can save it fearlessly for long time to get safe and bright future with bitcoin.
I agree that ethereum is one of the best coin who have a good future, together with bitcoin cash and other crypto currencies. In my opinion all coins have a bright future but it depends to us if they support them or not. Other than that it also depends to us on how they can manage the coins we have, for example bitcoin, more users are holding this coin because they believe that in the future it will increasing so fast. That's why I believe that all coins have a good future.