I have driven the Veyron Vitesse and ridden in a LaFerrari and a 918. From those experiences, I can tell you that they're vastly different cars with different goals in mind. The Vitesse is all about straightaway speed on the top end. It felt "heavy" on the corners whereas the LaFerrari/918 could just dance around those very same corners with ease. I would say that the ride quality between the three, the Vitesse felt the most compliant followed by the 918 and the LaFerrari. I have yet to drive or ride in the P1 but I have sat in all three cars and the P1 felt the most comfortable in terms of how it fit around me as a person. I will go on to say that the Vitesse felt the most opulent out of them all.