Whose Strike Beard Is Better: David Letterman's or Conan O'Brien's?

So the late-night hosts returned to TV on Wednesday — some with their writers, some without — for the first time since the start of the writers' strike two months ago. There were a bunch of questions: Would David Letterman and Craig Ferguson get better guests since their shows aren't being picketed? And would people be more likely to watch the shows with writers or the ones without? (So far, it's the ones without.)

But I'm wondering about something much more important today: Did Letterman or Conan O'Brien grow the better strike beard? (We ask the hard-hitting questions around here, you know.)

Photos courtesy of CBS and NBC