From the popularity and interest of most investors, the best coins remain owned by Bitcoin until any year I guess. But it doesn't rule out the coins under Bitcoin will following the footsteps of Bitcoin too, they would also showing the best side on the developments of its price. And I think it looks like the best coins that still can giving me a profits on investing I still believe in Ethereum, BitcoinCash, Ripple and Litecoin from the all of Altcoins.