We own a Calfee Tetra Tetra with the lightest carbon steerer/fork option. Unfortunately this setup limits our choice of tires to 700x26mm and under.
After the disappointing news at "build" time that our original choice Rivendell Rol-y Pol-y 700x 27's were too large we settled on running Continental Gatorskin Ultra's (700x25). We were quite pleased with those until winter, when the crud washed onto the road shoulders began to wreak havoc on them, kevlar sidewalls and all. We're now running Specialized Turbo Armadillos (700x26) which are slower and heavier, but look pretty darn tough.
We may try out some Panaracer Pasela TG's when the roads clean up later this year.