A well run Napa will have none of the problems you guys are mentioning. The real key is the guy you are asking for the parts, if he is good you will get exactly what you want and if he is not you will get the runaround. I have been in both types of Napa stores. Even with poor service I prefer a Napa as I have found that their parts are better quality in many cases, their reman stuff is the only reman I will use for example. Maybe you could try a different store or a different counter man in the store you went to.
Checker wanted $115 EACH for the Rancho shocks and are nearly as high on other stuff each time I have checked, I have no plans of going back to them. Autozone is a great place to get belts and hoses etc, prices are hard to beat. I have never gotten a decent starter or alternator or anything like that from Autozone though.