Rode my "new-used" road bike in today... the commute was significantly faster (even though I didn't feel great in the morning), and the bike rode surprisingly smooth (on Michelin Pro4 Endruance 700x25c tires). I love the bike, but it is very "serious" feeling, and I'm not sure I want to ride in on clipless pedals everyday (having to pack spare shoes, swapping out shoes before I come in the building, etc.).
This is my new dedicated commuter:
It's a single speed steel-framed On-One Il Pompino. Very fun bike! I rode it in last week for the first time on "Bike to Work" day, and although I was concerned about riding in on a Single Speed, I had a blast! It is a very fun bike to ride, and coupled with the Avocet pedals and half-clips (no straps), it makes for a very "easy" commute. Just grab and go, with almost no care as to what type of shoes I'm in...