The Roubaix Comp has longer chainstays, shallower head angle, and more fork rake than the S-Works and Allez. These differences generally translate into a more comfortable and stable bike over longer distances, with the emphasis on the word comfortable. The front end(head angle/fork rake) appears to be well designed. The fork rake is well matched to the head angle.

This bike is designed for racing. If you are planning on using it for all types of road racing, centuries, fitness, and general all around riding it should be very well suited to you. If you are buying a bike to use only for criterium racing, this MIGHT not be the best choice, although I don't think it will hold you back.

If you showed up on a ride I was on with this bike, I would think you had made an intelligent choice in your bike purchase.