Well, I finally had time to run by best buy last night to look at some sets. I haven't done more than take a quick glance at tvs in person in about 8 years, when I bought my Hitachi crt rear projection unit.
I really wanted to compare the Samsung leds with the panny plasmas, but they were running them from different sources, so that was out of the question.
But, they had an open box 50st60 running Skyfall on an old Sony blu ray player, and I was blown away. All we did was turn off the extra processing, put it on 60hz, and changed the preset color mode. I was amazed with the quality, and I'm sure it would be even better with some more tweaking. I didn't even want to leave, I was so enthralled with the picture.
I'm still planning on doing some direct comparison at a magnolia hi-Fi BB, but I'm almost certain I'm going to end up with the S60 (or even the S64)
Thanks to everyone who's been giving so much awesome info in this thread.