Yesterday, I've beaten a 550 with my 355. Idiot could not even keep up with me. Well there was a little traffic, not much. 550 is not that much faster then the 355 period. The guy was trying so hard it was kind of funny I think. My buddy took some pics. I'll post them later. You should have seen this guys face when he got whooped. He deserved it I tell you. Acted like he was Shumi and thought he was driving an F1 car or something. 550 seem to heavy and not like an exotic at speed behind me.