Well, does the Bianchi come with carbon stays? Just curious. I'm not too familiar with that model. Lemond is a nice ride, but some have shyed away recently for PC reasons. Personally, I could care a less.
Even though the Sarthe is a smooth ride, there's just something about that orange that churns my stomach.
Is the Bianchi celeste? If so, that is something hard to pass up on. Not the greatest color, but definitely a signature for your ride. No one will wonder what bike you have.

Oh, and if I did get the Bianchi with celste and carbon stays, I would seriously look at digging around for a carbon crank just for spite. With the Veloce 10sp system, that would be pretty sweet.