Interesting and unfortunate about Backcountry, I got some love for them to start the year. A jacket I wanted was on sale one day, not the next - bad luck for me I decided to buy the jacket on the next day when it wasn't on sale. The annoying little "want to chat" box popped down and rather than just close it I decided to ask if I could get the sale price from the day before. I didn't think it would happen, but they went for it and gave me the 30% off expired sale price. Then they shipped it to me for free in two days. All-in-all a pretty great experience.
Moosejaw makes buying stuff kind of fun, but that matters very little to me when they took several weeks to ship me the wrong size jacket. That was my one experience there, I would only order from them again if they had a markedly better price than other sites.
REI is good because of their return policy and the ability to return things to the store instead of shipping them, but they throw tax on there which ups the cost, particularly on pricier items.
Whittaker Mountaineering seemed okay for the one item I've ordered there, it's on its way to be returned though so we'll see how that part of the process goes. They include a return label so that helps.
Anyone ever order from Alpen Glow Gear? They have the Baruntse for a pretty good deal and I'm considering ordering a pair.