If you ask ten people whose cheap part store alternator is better (O'reilly, Advanced, Napa, Autozone) you will get 10 different answers. They all use cheap Mexican refurbs, it doesn't matter which part store chain you bought it from. You have X out of 10 chance of it failing-- some will have Autozone failures, some Napa, some others, but they come from the same place. You can either buy the value-line at the chain stores with little or no warranty and roll the dice, or the more expensive premium-line at whatever chain store-- you get basically the same reman with a longer warranty. Or you can buy a Denso, Delco, whatever name brand reman (or even new) if you have the cash, but that gives you extra piece of mind that you're getting a decent product. If all else fails, go buy a junkyard unit and your're probably better off than buying a chain store reman alternator, as at least the OEM junkyard unit isn't using cheap Chinese/Mexican aftermarket diodes, brushes, etc, whatever they used to rebuild it...