On a personal note, the staff and trainers of WeBeFit have been buying shoes from Zappos.com since 2004 and LOVE it. They ship for free, have a no questions asked return policy if the shoes aren't what you want PLUS... they've got GREAT prices.
We tend to favor shoes from New Balance for 2 reasons.
Consumer Reports gave them a Very Good rating AND at least 70% of them are made in America. They're the only major athletic shoe company that can say that.
Click on the link above and give them a try!