I realise I'm a guy but I'm an avid shopper :) On my Vegas trip I visited 3 seperate outlets in this order: North Premium, South Premium, and Primm. Honestly and well, unfortunately, I would have to say we visited the outlets in the wrong order! Oh well - next time I'll remember. I'll be honest, Primm doesn't look like much but I was very pleased with the store selection and inventories they had - in comparison to the premium outlets. Don't get me wrong, it depends what you're shopping for because obviously each outlet I mentioned offers a variety of stores that the others don't offer. We took the shuttle from MGM and Mel, our driver, such a great guy - followed the schedule precisely. I recommend this shuttle (seek info on the outlet website) to anyone - rather than renting a vehicle and doing the 40min drive. You might say "Damn, only 4h at the outlet?" but that's honestly all you'll need. We walked through the mall twice in the 4h window.
2 Fossil Watches, 2 Nike Golf Shirts, 3 Nike Dri-Fit T's, 2 Nautica Polos, Old Navy Dress Shirt, Old Navy Shorts, Pair of Crocs = $275US - NOT BAD, NOT BAD AT ALL