Regardless, Autozone sells a lot better filters around here than AAP, so it may just be the area but all 3 AAPs around here only sell Purolator, STP, Fram and M1
I will NOT use a Fram Filter OR a STP.
AZ sells more but they do not sell Purolator, all depends on who has the better deal at the time, if AZ Has a better deal on Oil+Filter, I usually then buy a Bosch Filter and either Quaker State High Mileage or Pennzoil High Mileage, if AAP has a deal its usually Purolator Classic/Pure One and Quaker State High Mileage or Pennzoil High Mileage, Next oil change though Im thinking of a Pure One or a Distance Plus, or a WIX filter and PP, new place I found an Ind. store sells WIX filters.