Oh boy, this is a place I frequent way too often...straight scoop:
Chanel: go inside, don't expect to find anything. They put all the weird stuff in there, like silver jumpsuits and bizarre bags. But, once in a while you find a gem. Last month I got a black tweed boucle skirt for $300. The SA had no idea why it was there. Did not belong on any rack or group, she just said buy it and run! You might find a pair of shoes...
Saks: I don't like this store, too much crap. period. Not much high end and the stuff they do have is right in the middle. When I go in, I make a beeline there and then leave.
NM: Some good stuff, but be warned, well picked over so look closely before you buy. Half the time the stuff is ripped or stained if it is a really great deal. Can always return it, but if you don't live nearby, that can be impossible. Some shoes and some handbags, but depends on when you go. Very limited Chanel, and they keep it in the dressing room, so go there and ask.
Fendi...if you like this sort of thing, they have a big selection.
Valentino: Lots to choose from.
Prada: some good bargains on clothes and shoes, not so much on bags
YSL: Great buys on current styles of bags/shoes, maybe last season's color.
Bottega: Limited and pricey
Jimmy Choo: Depends on when you go. I just got plum colored croc pumps for $500, so was happy
Burberry: Used to be better, now very generic. I think they make stuff just for this store.
Coach: See burberry.
Barney's: I wouldn't bother
Ralph Lauren: Most made just for the outlet, but some purple label and wms collection pieces. I got a $4k cashmere collection suit for 800 last winter.
Gap/Banana: Go in at your own risk. Most made for the outlets, hoards of people. I can't be bothered.
Escada: if you like escada, great prices, lots of merch.
Ferragamo: See escada
Gucci: Not great prices or selection. Same for Tods
Kate spade: Haven't been for a while, last time, many shoes, less bags.
There are lots of other stores there, but I don't bother with them. Here is my itinerary when I go. I go early on a sunday, park behind NM. I hit NM, Valentino, down to Chanel, into Prada, on to Jimmy Choo, over to YSL and then to Thyme to Eat for an iced tea and then on home. I don't bother with the rest anymore!