I prefer the PQ from either the Sony 929 or Sharp Elites to the Kuro or VT30. The black levels are as good, grayscale and color is excellent and the picture on the local dimming LCD's is more dimensional and detailed. And yes, all of this stuff is calibrated except for the Elite.
Plasma has the obvious advantage of viewing angle (and price in the case of the VT30), but the top end local dimming LCD's are exceptional and offer, IMHO, better PQ within their viewing angle.
Once you drop into non-local dimming LCD's, you have a tradeoff of dimensionality and vividness against black level and uniformity. I can understand things being not as clear cut there.
Technology moves on. If OLED can overcome the practical concerns (life, IR & cost) then it will be top dog.
Emotiva XMC-1 & XPA-5, B&W CM9s2, CM8s2, CMC, Hsu VTF-15, Sony BDP-S790 & HX929, Auralic Aries, Apple TV