I had to laugh after reading the last sentence. Have you ever even ridden a 4.5? Would you compare a trek 5000 carbon frame to an aluminum frame?kneejerk said:The Madone 4.5 does not share the comfort ride quality that the OCLV Madones offer. If you are looking for light weight, comfort and performance the OCLV Trek is hard to beat. If you can live with more road vibration getting through other carbon frames and Aluminum do just fine. Not all frames being equal in carbon construction, I would compare the ride of the Madone 4.5 more to an Aluminum frame than to the OCLV carbon frames.