I have to second what Muzzyman said about the rib. I pulled back some Mathews bows at the same shop and compared them at the same time to the new bowtech's they had just gotten in that same day., and what a difference, The mathews was much rougher and seemed to break over much harder than the bowtechs did. The Bowtechs were very smooth. But as for the Mathews customer service, one person who worked at this particular shop said one of their reasons for getting the bowtech line this year was because of Mathews bad customer service and also their lack of advancement with their bows.