I do not ride a carbon Casati, but an aluminum one - the Challenge. Rides very well, but I'm sure in the sea of high-end aluminum bikes, they all ride well. I don't think there is a "unique feel" to a Casati ride.... I'm guessing neither with Merckx, Pinarello, Fondriest, etc. But what does stand out with the Casatis is the craftsmanship - super smoothed welds, hidden seatpost clamping bolt, fantastic paint work.