Ripple of Ethereum?
Check out the charts in the past and make up your mind:
Ripple: https://www.coinranker.net/cryptocurrency/ripple
Ethereum: https://www.coinranker.net/cryptocurrency/ethereum
Ethereum is a stable coin that has been on top two for long time,as being used by almost all of the ICOprojects the ERC-20 of this great coin
Ripple is unstable coin since this being backed up by bankers whos greedy and selfish and a pump and dump coin
So if i were to choose i believe that still ethereum is much better for long term holding,because we are talking for future here and not just for today