I've been looking at some of the tires mentioned, and there doesn't really seem to be a whole lot of difference between the various makes. I do prefer a street (slick) type tire that has a bit of tread, particularly on the sidewalls. I'll probably end up going with Continental Contacts since they seem to be an okay tire on my regular 700c commuter. I like the tread and the puncture resistance is pretty good, especially since riding around Chicago means I'm pretty much tooling along through all kinds of tire-damaging trash.