Autozone -- I could walk out the front door and be in the parking lot in three minutes
Plus they always help me out and know all the right questions to ask me. It's six of one, half dozen of the other with most of these places, but the people that staff them make all the difference.
Oh, and they don't do this to me: "Ok, so you need a wiper control module...which motor do you have? is that a four-wheel-drive? automatic or manual? regular cab or extended cab?"
