I go after work around 7 or 8 and love how there is never anyone there. I just hate shopping with tons of people and people hitting me with their bags. Macy's has my favorite brands, DKNY, CK, Ralph Lauren and sometimes they have decent sales.
It's true there are never any salespeople around though. It's hard to find anyone to help you, but not having to deal with tons of other shoppers makes it worth it.
Pros: deserted!, quality brands
Cons: no salespeople