I'm usually a 32 and I tried on a pair of 31 PS brand new at a store and they were snug but good. That was a few months ago and I caught a pair of brand new 31 NS on ebay
for a steal and they were huge.
I may have slimmed a little but I haven't lost wait...
I'm wondering is there usually that much of a difference in the waist sizing between NS and PS? I'm debating sizing down to a 30 but am worried that might be too small. I got a pair of 31 N&F wierd guys that are perfect if that gives perspective.