You often can't even find the best gear at the big box retail stores. Small companies like Gossamer Gear, Tarptent, etc. make some seriously fantastic outdoor gear. You can't find them without some looking, but it's totally worth it.
Yeah. And in the mountainous areas there's usually a good retailer nearby the local REI flagship. Seattle has like 3 or 4 that I can think of off the top of my head.
I will say that when I went to the local REI here the lady I worked with actually spent about an hour with me fitting a pair of backpacking boots and explaining how and why some of the boots would fail when I wore them. I learned more about my feet from her than from any of the other places I went.
You can get that kind of experience at a lot of the boutique alpine or backpacking stores though.