For me ETH because with their ERC-20 is empowering developers.
Doubtless this particular token empowers developers of all types to accurately predict how new tokens will function within the larger Ethereum system.
The impact that ERC-20 therefore has on developers is massive, as projects do not need to be redone each time a new token is released. Rather, they are designed to be compatible with new tokens, provided those tokens adhere to the rules. Developers of new tokens have by-and-large observed the ERC-20 rules, meaning that most of the tokens released through Ethereum initial coin offerings ICO are ERC-20 compliant.
Some examples of ICOs that are following this technology
UTRUST
https://utrust.io/BAT
https://basicattentiontoken.org/APPCOINS
https://appcoins.io/I second that. The success of ERC20 is undeniable. Hundreds of ERC20 token have been created and some of them already have a higher value than lots of other cryptocurrencies. Add to that the fact that most Altcoin exchanges trade some ERC20 token and that they are supported by pretty much all Ethereum Wallets. I think we have a winner here.