ETH. Ethereum seem “better”
Ethereum offers some interesting pieces of technology. Smart contracts have been quite a revolutionary technology.

Other altcoin has a disturbing lack of decentralized application possibilities, which makes Ethereum seem “better” in this regard. Then again, there is no “major” decentralized application in existence to be embraced by mainstream society either.

Ethereum has a technological edge over other altcoin.
for me, Bitcoin Remains Best Performing Currency.