Which is better, XRP or XLM?

Could you please elaborate on the comparison between XRP and XLM? I'm curious to know which one offers better potential in terms of growth and adoption. Could you discuss their respective use cases, the technology behind them, and their current market positions? Also, are there any significant differences in their scalability, transaction speeds, and cost-effectiveness? It would be helpful to have a breakdown of their advantages and disadvantages so that I can make an informed decision. Thank you for your assistance.