compared to the two, I actually prefer ripple, because the original ripple has semi-decentralization so if for example there are parties who try to make a copy and have the title "Ripple" then Ripple has the right to sue the project, different from ETH where people are free even to make ICO use the name ETH in front of it.
Ripple's potential is also very good for the future, in contrast to ETH which only relies on transaction fees and ICO as a service in its famous name