I little bit of both. The Model B was the first. Then a 4-year search for the Frejus. I had the Gran Sport and the Vittoria Margherita, at that point the obvious hole was cambio corsa. I use the Bianchi as a city bike and in these parts 1 speed is plenty although the Selvino was originally a 3-speed. The last 4 years on my commuter have been fixed which I really like so the pista fills that gap. And the modern bike just has the typical conveniences.

As for Golden Boy's question, they are all so different, each has something something the rest don't. But if pressed, I'd go for the Frejus. It puts a stupid smile on my face, even at a challenge ride like the DD. As a matter of fact, I am designing a custom commuter based off of the Frejus geometry. You can see its extremely long wheelbase in the OP.

106100-002-026f by iabisdb, on Flickr