Thanks, y'all! I test rode both--thought the Eros Donna was a lovely smooth riding machine, thought the Dolce "would work"---so you can tell I'm really lusting in my heart for the Bianchi. They had to order another one, since the one I test rode got sold a few days later. I'm waiting for it to come in, will have a local PT/cyclist do a fit, and then decide. Steel, Campy (which I also much prefer), bleached Celeste...I did also really like the Rodriguez (local custom bike builder here in Seattle), but it would cost significantly more for about the same bike.

By the way, I have already found some saddles I can live with, including Serfas RX Womens. Dirt Girl, what have you tried so far, and what's your most manageable one to date?