I've been to Mustang Xchange a handful of times, and it tends to be pretty hit-or-miss. They have a large selection, but amidst some nice designer and vintage pieces is a lot of no-name fast fashion. They could benefit from being a little pickier and pricing more appropriately. Anytime they get something with a label they jack up the price, seemingly without regard to how stylish the piece might be currently. I've had more luck with their shoes and accessories than with their clothes--I have a few pieces of vintage jewelry and some vintage purses from Mustang Xchange that I really like, but I don't think I've ever bought an article of clothing there. They're more expensive than Buffalo Exchange, which is good for selling but not so much for buying. However, you may want to call ahead if you plan to sell, because they don't give cash after 5 and sometimes they won't buy at all. If you're in the neighborhood it's worth stopping in, but be prepared to do some digging to find something good.