a lot of news talking about cardano is a substitute for ETH in the future. whether it is an issue or news that is not true. but i believe ethereum with the best technology at the moment.
I don't agree your opinion about : "Etherium is the best technology at the moment". In term of technology, ETH can't compare with other similar platform such as ADA, EOS, Neo, Stella, Zilliqa. But the ETH's things are better than the other similar platforms is a strong community and many Dapps are running on it.