After having this set for nearly a week, I have mixed feelings.
First, this replaces a 5 year old Sony KDF-60XS955 (60" RPLCD, 720p). The increase in resolution is nice, and the difference in contrast is amazing. There is also less noticeable screen door effect.
However, my old set was far superior in motion fidelity. The new unit is very susceptible to motion blur. I can't stand what motionflow does to the picture(though I'm not entirely sure exactly what cinemotion does), so I generally turn it off. When it's off, the motion blur, in comparison to my old set, is really off-putting.
I also notice that almost everything I watch has some sort of "texture", for lack of a better word. I see it in certain video games, and I see it in various compressed sources. Basically, compression artifacts are more glaring on this set than on my old one, which is unfortunate. Watching charter cable(which still has a high number of analog channels) is now more painful than it was before.
I have been fortunate in that I have seen no evidence of flashlighting. Lighting is not completely uniform; the upper left of the screen is fractionally brighter than the other areas, but is only visible on totally black screens(turning off my ps3 for example) when my room has all its lights off. In other words, the uniformity issue, so far, cannot be observed when actually watching tv.
I also must say that I notice no lag while gaming. That's not to say it's not there, just that I have not noticed it yet. I typically don't play fps's online, and don't like fighting games without a nice stick, so input lag has not been critical yet. I do, however, play a good bit of rockband and I'm concerned with how well it plays.
OVerall, I'm happy with the increase in resolution and contrast, but that old Sony set was superior when not watching bluray or gaming.