OmiseGo is a great project, looking to disrupt traditional payment processors. The market is huge and OmiseGo has strong support from Vitalik Buterin, it has strong fundamentals, it is open payment platform and decentralised exchange, compared to closed and centralized ripple - owned and controlled by few people, I believe OmiseGo has much greater potential.
The XRP will be the past after OMG starts operation with partners in Southeast Asia and after it in the whole world. The people still don't understand that banks and centralization are evil and want only more money and more power to control the people through the money.