LRS, pretty much always. I use shoes that are hard to find and while I could get them online for maybe $5-10 less, with my frequent shopper discount and the awesome service I receive, I'd rather go to the store. The store folks don't try to get me to buy something I don't want or need. They always want to chat about training and races. Simply put, they love running and want other people to love it, too. I will have a problem if they quit carrying my (current favorite) shoe, though!

I have gotten a couple of pairs from backcountry.com but that's only because I can go over to their warehouse and try the shoes on before I buy (they are in the city just west of Salt Lake City). I like them (the shoes and bc.com) but I don't think of bc.com first when I think about running shoes.