Wanted to give an update on my TV shoot out:
Regardless of the buzzing and slight pink edge problems I had, I still decided to give the 65ST30 a try in a PQ shoot out between itself and a 70" Sharp 632. I used d-nices settings for the plasma and my own calibrated values for the sharp.
Tested material included scenes from pirates of the Caribbean, monsters inc, up and lord of the rings for movies. I also looked at some DVRed content (hockey, football, dexter and biggest loser).
On all scenes save one (PotC only slightly) myself and my wife both concluded that the sharp actually had an equal or greater picture quality to the Panasonic. Colors were brighter and had more pop, movies had more of a "perceived 3D" feel (SOE was removed on both sets) and detail seemed better across the board. Also, black levels did not seem grossly different - though I am in a dark basement so I was able to turn down the LCD backlight to help. Overall the immersiveness of the larger screen was also preferred.
The results were surprising to me to say the least, I really expected the Panasonic to win out - but I let my eyes be the judge. I guess at least this saves me the hassle of returning multiple sets to get a "good one". Obviously YMMV but for me, this is what I concluded.