I have a Bianchi Imola that I bought on Ebay this winter. It was a 2009 that must have been a demo. I bought it for $600 and it still had the sale stickers on it. I bought it for a travel bike - had S&S couplers installed on it so I could pack it in a airline case (needed a steel frame for the couplers).

My main bike is a Cervelo R3 (carbon). I like the Imola. It rides pretty nice. It is a more relaxed geometry compared to the Cervelo and it is quite a bit heavier but I could live with it. It is a pretty stiff frame and is fine for climbing. If you are looking for a really light bike, this is probably not the best choice but you are going to have to spend considerably more to reduce the weight. It isn't a Cervelo but it only cost me 15% of the price of my Cervelo.