Plato's Closet is always a good one. Repurposed for the Thrifty Shopper has a great clothing selection (1-2 racks of brand new stuff). The St. Vincent dePauls tend to have pretty good prices but not the best selection. I also recommend Red, White, and Blue but their prices can be a bit higher and they are usually packed! I've found some good finds at Community Thrift Center also.