Which is better Ripple or Cardano?

I've been hearing quite a lot about Ripple and Cardano in the cryptocurrency world, but I'm still not quite sure which one to invest in. Could you help me understand which of these two projects is considered better? What are the key differences between Ripple and Cardano in terms of technology, scalability, and adoption? Also, could you give me some insights into their respective roadmaps and potential future growth? I'm trying to make a well-informed decision, so any detailed comparison would be greatly appreciated.