THe differences in the bikes are going to be the components and the grade of carbon on the frame. The pro frames, in all of their lines, have a higher quality carbon then the Elite- so it will produce a more responsive ride. The components will include the gruppo,wheels,and probably the stem and bars. The geometry of the frames will be the exact same.

So once you decide that you like how the bike fits, your next step is to decide which components you really need for what you will be doing:-)