I bought a Bianchi Eros (not the Donna) last August with mostly Campy Mirage components (I replaced the crankset with Mirage 2 months ago) and love Campy. I had the Shimano 105 groupset on my Trek bike and have noticed that the shifting is so much smoother with the Campy especially at higher speeds. My husband has the Veloce on his 8 yr old steel Bianchi (with many miles) and swears by it too (never has had to replace anything except for the chain). It is all a matter of personal preference, but I would choose Campy any day.