Bitcoin will remain the best, bitcoin is the heart of the world of cryptocurrency. Because maybe someday when we woke up,theres a new altcoins would replace  bitcoins in its postion as a number one crypto coins in the market,maybe not now but maybe soon and we could not guess the exact moment when should it happen. There is no competition in the world of crypto, just invest to it and claim your money if the price goes up. Whatever happen, be patient because bitcoin is a crypto currency. Indeed, no one can beat and fight bitcoin because it is the king of all coins so it will remain in a long time.