Gentlemen,
May I humbly propose that the Shimano 105 10 speed is nice, shiny, little toy for folks who subjectively prefer Shimano for God knows whatever reason...
The Campy Centaur group is infinitely more graceful in appearance and has an excellent price to quality ratio as compared to Chorus and Record. Additionally, Campagnolo defines the quintessentiel spirit and soul of European cycling, embodied in a time-honored, historic name and beautiful craftsmanship coupled with performance which warrants no complaints, au contraire.
Yes, this is a subjective opinion, but perhaps the overall objective needs to be clarified on an individual basis...On a Fuji frame I could accept Shimano, although I would not ride it. No soul, no spirit, no history.
My Italian bikes are draped and dressed with Campagnolo from head to toe and I have the impression of riding high-end, high-performance bikes with logical, symetric and coherent component marriage. Visions of Ottavio Bottechia and Fausto Coppi push me along as I struggle up the French Alps here in summer. It's a psychological, whole-man experience and is simply not possible (for me) with Shimano.
Just a thought, please don't take offense.
David