Originally Posted by Cyclosaurus

Thanks everyone for the suggestions and info. So here's my final list for comparison, with the best prices (incl. shipping) for 2 tires:

Vittoria Rubino Pro Slick City $48
Michelin Wild Run'R $51
Continental Sport Contact $70
Panaracer T-Serv Protex $80
Schwalbe Marathon Racer $86
Schwalbe Marathon Supreme $142

The Michelin Wild Run'R appeals to me as a pure slick tire. If I'm going to jump up in price from that one, seems to me that the Marathon Racer is the best upgrade.