I love Clothes Mentor. They are really picky about what they will buy, which means you benefit as a shopper- pristine, name brand clothing from the past few seasons. The prices are perfectly reasonable, too. The salespeople are super attentive- always offering to start a basket for you as soon as you have an item or two in your arms. I always spend several hours in this place, combing through each and every section, because you never know what you're going to find. Probably 50% of my wardrobe comes from Clothes Mentor, and a good chunk of that came from this exact location.
My only suggestions for this location is to turn down the air (I was sweating like a pig by the time I was done trying on all my clothes) and don't overcrowd the racks (yes, it's great to have a lot of stuff, but I hate missing things because I can't pull them apart to see). Also, the Chapel Hill location is a lot more organized- the sizes were kind of thrown together in several sections, which made me worry that I'd missed some things in my size from other sections.