I bought all of my hardware, my last 3 packs, my last 2 pairs of boots, two sleeping bags, assorted clothes, and my last rope at PMS. -Mostly more serious gear.
At REI I bought my trekking poles, a lanyard for my work ID card, insect repellent, 5 boxes of Gu (25% off), a bandana, gloves (on sale), a 5-oz. capacity water bottle, a couple of slings, a pair of plastic spoons... -Mostly nickle-and-dime stuff.