My old NEC LCD3090 has reached the point of no or little return, with deltaE's over 2.7 because of inability to match needed brightness levels, (115 cd/m2) and because of indiscretions while trying to clean stubborn spots on the screen too hard. (It's over 10 years old.)
I'm getting delivery on the PA302W, and vaguely remember that I can't simply set it at 115cd/m2 when new, but to start at a higher value. Right now, my Just-Normlicht print viewing station and the monitor are adjusted so that the brightness of my viewed prints matches the perceived brightness of my display, and I've been a happy camper for years.
I don't remember the recommendations on how to start with a new monitor while it "breaks in," and would appreciate some guidance, for which I thank you in advance.