At this "middle child" of the Armani trio, the clothes are dressy without quite being formal, often in cream, muted blues, and the ever-cool shades of soot. Subway: N, R, W, 4, 5, 6 to 59th St./Lexington Ave. Other location: 410 West Broadway, at Spring St., SoHo, PHONE: 646/613-8099; Subway: C, E to Spring St.