There are some excellent buys to be had for designer suits and separates. Men can flip through racks of Bill Blass and Cerruti, while women can uncover Calvin Klein and Versus Versace without even trying. Nondesigner racks can be uninspiring. Subway: 6 to 51st St./Lexington Ave.; E, V to Lexington-3rd Aves./53rd St. Other location: 42 Trinity Pl., at Rector St., Lower Manhattan, PHONE: 212/797-1199; Subway: R, W to Rector St.