belts dayco

Just curious as to who is running what belt, and why. I can get the Dayco HPX 5020 for 53$ (Polaris 1080, 70$) or I can step up to the Dayco XTX 5020 for 93$ (Polaris 1115, 160$) The XTX looks just like the spendy Pol belt. I was hoping to trade in the Polaris 1080 (spare belt) that came...