I think altcoin with the best technology is definitely Ethereum. Ethereum is the boss of all altcoin. It is also an open source platform with smart contracts. Many altcoins are run on Ethereum, and Ethereum has attracted since development More and more fans, it is worth investing heavily
The advantage of tokens released on the Ethereum network is that ETH appeared first. If EOS succeeds in conquering its audience, tokens based on it will be a success.