I recorded my morning RSS checkin with BlogBridge 4.1 (well, I recorded it with iShowU, but the checkin was done using BlogBridge). The power of the feed star rating feature is really hard to describe - it's much easier to just show it.
I wound up with a 16 minute recording, which is about how long it takes for me to check in on 443 feeds first thing in the morning. I took some time to describe the BlogBridge interface, but skimmed slightly more than usual so it probably worked out about the same duration.
I skipped reading many posts in detail, because that would make for an even more boring recording. The BlogBridge application was running on my second display, with the browser running on my main display - I switched regions for recording near the end (you can tell when).
Oh, and don't read too much into the star ratings. I can't rate every feed as being 5-stars, otherwise the ratings become rather useless. There are a lot of great feeds that I subscribe to but have left them unrated (or under-rated). That's OK. My 5-star feeds of trusted people help me filter everything so I don't miss anything.