I do believe that Zilliqa and ADA are really great altcoins and they're sleeping giants but IMO, EOS is the biggest one 
). EOS is the only altcoin has change to become the best altcoin in the future, I think. But at the moment, it's just my own prediction cause there are months left till 2019 ).
). EOS is the only altcoin has change to become the best altcoin in the future, I think. But at the moment, it's just my own prediction cause there are months left till 2019 ).In the latest days I hear more thinks about Ziliqa. This project team have done a lot of good things and I think especially in 2019 that the development will give good results.