If we are talking about long-term investment, I will prefer to choose Bitcoin again for the long term, at least 4 and more years.
This is based on what happened right now, we can see the significant increase of Bitcoin so far, experiencing more new ATH during this bullish era although right now the price still hits low.
And about and XRP, we know that they are also top coins. But, I am not sure that I will pick them for long-term investment. It still offers higher risks than Bitcoin.
And moreover we know how the problem of XRP previously, it becomes also one of my considerations. Maybe there will be other problems again in the future.