I finally got around to trying TV Listings again, and I must say it's quite impressive; it very much wants to replace the default TV Guide on my system. I did run into a little bug with the Recordings Panel though:
I didn't like the "Recording Soon:" display listing recordings happening a full day later, so I shortened the 'Recording Soon' time: to 8 hours. That's a better definition of "Soon" to me. However, now if there are no recordings at all in the next 8 hours, the "Next Recording:" display lists a recording that won't happen for many days, and always the same one... "America's Got Talent" in my case, which recorded this past Tuesday and won't record again until next Tuesday; it said that show was Next all morning yesterday, and all morning again today. As soon as it gets within 8 hours of a recording, everything works again as it should.