XRP its a centralized cryptocurrency with a unlimited supply, their ecosystem controled by bank. Imagine that with an unlimited supply, and only the company can mining/created the XRP. Better to use ETH.
In this regard, I fully agree with you, since the very idea of using cryptocurrencies is decentralization and the lack of control of users of cryptocurrencies. The banking system has a completely different direction. Of course, I understand the concern of many cryptocurrency users regarding ethereum, but I hope that the update of Constantinople dispel all doubts about ethereum.