I'm just a delivery driver but I hear firsthand the comments the shop technicians make about us. Overall, Advance is a joke to them compared to the other parts suppliers. I deliver a lot of Dorman nuts and bolts while O'Reillys hauls in the big money items like fuel pumps, chassis items, and struts. Most of the old Carquest customers went to Napa. When the DM comes to the store he talks big but never makes any progress with improving our staffing and says he is there to make cuts not spend money. Seems like all the knowledgeable people in management have left for more stable jobs.
Found this at @PiE7sEt-4ooq, thought it really sad how similar my own experiences are. We have long ago stopped being the supplier to look to for best parts, and it shows.