Which Facebook feed should I be reading: "Top News" or "Most Recent"?

I’m not even sure I understand the difference between the two. I assume “Most Recent” is a feed of all posts in reverse-chronological order (like Twitter), while “Top News” is a machine-curated feed of what Facebook thinks should be on top, taking into account chronology, but also my expressed preferences and past behavior.

Life is short. I don’t have time to read both feeds (arguably, I don’t have time for either). So, assuming my definitions are roughly correct (or feel free to correct them if you have better information), which one should I be reading?

A bit about me: I prefer my Twitter feed to my Facebook feed and typically read (or skim) every tweet. For me, Twitter has a noticeably higher signal-to-noise ratio, but many of the people I care about are only on Facebook. On Twitter, I follow fewer than 50 people. On Facebook, I have over 400 friends but I’m quick to hit the “Hide” button when someone gets noisy.

I’m aware that I could merge my Facebook and Twitter streams using something like FriendFeed, but that strikes me as the worst of all worlds (diluting the value of each).

…and don’t even get me started on Google Buzz.