Yeah I am deciding on PS. I've had NS before.
My waist is 30, and I wear 27 on NS, so would 28 on PS fit good or too skinny?
If your waist is 27 in NS and you want a fit a little slimmer, I'd go with a size 27. I wore a 30 for NS, decided it wasnt slim enough, got 30 in New Cures, and just got the PS in 29 and am pretty happy with them so far.