I had one of the last Pioneer plasmas and never saw anything as good as it until recently, when I bought a LG oled55b6v. I looked at the last (and best) plasma Panasonic 55" they made, nearly bought it, but decided not to. The 55" was bigger than my Pioneer, but the picture was far from good enough. Usual grainy, poor blacks, flat and not sharp.
My LGoled55b6v is absolutely superb. The best picture I've ever seen. The 100% black takes a little getting used to, as I've never experienced an image this rich. I can't help but notice the cinemas's flaws now. The oled image is very sharp, rich but beautifully graduated tones, especially in faces. Virtually unlimited settings to perfect the balances, but surprisingly enough, it wasn't that far out from the manufacture calibration. A few tweeks to "expert dark room" mode.
Professional calibration? Hmmm, that's like saying I've booked myself a professional photographer, so the pics are going to great, right? No. I've read a lot about tv calibration on the internet and I don't agree with a fair amount of what's written and I've seen calibrated tvs and seen obvious flaws in those.