The Crossroads and Buffalo Exchange stores usually have a worthwhile selection and a constantly rotating inventory. Crossroads on CapHill is pretty large and gets all the hipstery, homo, and oddball rich-college-kid stuff; they've got a couple of "designer" racks and all the especially expensive items usually are strung up near the ceiling, hah.
Red Light is fun to look through when I'm feeling campy and want a $40 band tee from the early '80s or a pair of bright blue alligator loafers that were owned by, like, Joe Dallesandro.
You and I definitely shop for different things, though, so idk if they'd be of any use for you.