Looks like the 48 Ruby and the 47 Eros Donna aren't all that different geometry wise. The Bianchi is a teensy bit longer, but its only a mm so it shouldn't make too much difference, but the seat tube angle is a little different too and I'm not sure what effect that will have. The biggest difference is in the fork rake so you may need to be careful about that pesky toe overlap on the Bianchi. Not that I'm biased or anything but the Ruby is a great bike.....