Clothing racks should allow merchandise to be presented "face forward". It is very difficult to sell "shoulders" and that's why you rarely see circular racks in contemporary stores.
Use 2 and 4 way racks for the bulk of your floor presentations. Spice up the floor merchandising with tier tables, bins and slatwall or grid pinwheels.
Work with custom racks if you intend to carry the stores theme into its design. They will make your store a little more "special" than anyone else's