I've been playing and moderate gigging (1-2 times per month, all smoke free locations) with my Privia PX3 for a little less than a year, and it is holding up fine. I do try to take care of it by only transporting it in a case (soft-sided -- but do consider spending more for a hard shell case if you gig a lot), and do respect the fact that a case only offers very limited protection.
But I do love this keyboard, its feel, its tones, its light weight, and its amazing value, probably the best value in a true 88 key weighted stage keyboard out there. Connected to a decent Roland keyboard speaker, and this thing sounds simply amazing.
Did I say how much I love this keyboard?