I tried the Cervelo RS. the geometry was wrong for me. I also didn't get used to the SRAM Force double taps. The cervelo had Fulcrum Racing 7 wheels.
I tried the Giant TCR Advanced and it was great. It was light and very responsive. The only thing I didn't like was the wide bar. I really prefer a 40. With SPD pedals it weighed 17.3 lb. I think I prefer the Ultegra 6700 components and the Mavic Ksyrium Elite wheels.