I'm in the same boat as you. My true size is a 9.5. I had a pair of pirate black yeezy's in a 9.5 but they fit a little loose on me, so I sold'em.
Looking to grab a pair of NMD's on the 30th and I want them to fit snug to get that sock-like feel out of them. Did the 9.5 NMD's fit like a glove...