Aaron's in West Seattle is pretty good. They stock some stuff that is harder to find at other shops, and they are definitely the shop nearest to home for me. There is a little bit of attitude to get past though. If you ask, there are two ways to do something; Aaron's way (it's best because he says so, no further explanation needed) and the wrong way.
I don't feel like anyone there is a bad guy, and they are always willing to take a little time with customers. I mean like I said, I buy small stuff pretty regularly and am working up to a bigger purchase this summer. It's just possible that some things will be presented as "The Truth" when they are really more like "The Opinion" of whomever is talking to you.