Grapefruits used to be my favorite citrus fruit. Then I learned about pomelos. Now I can barely stand grapefruit knowing there is something out there that has much the same flavor but with less of the sourness, while being much larger.
Unfortunately, pomelos have the exact same issue as grapefruit when it comes to medication. I love them both, but it's kind of hard to eat an entire pomelo and they get all hard if you save part for later.