I do believe that Bitcoin is still the best of let me say is still the "King", but given that other cryptocurrencies are excelling or catching up to bitcoin base on charts and daily transactions maybe some of the cryptocurrencies could catch up with bitcoin or potentially out run it. Let's take Ethereum as an example. There are already almost half as many transactions on the Ethereum blockchain as the Bitcoin blockchain, and Ethereum is growing exponentially, while Bitcoin has reached its maximum capacity for now. We can therefore say that maybe someday a crypto currency can out run bitcoin.