I'm just about ready to jump the gun here and I'm trying to decide between these two sets. There's just a $400 difference in price with Sony being $4,499 and Samsung coming in at $3,999, so price is not an issue.
My wife is completely in love with the Samsung UN55C9000's aesthetics, including it's touch-screen remote with the little TV in it & all. It is also the cheaper set here.
With Sony I'm getting extra 5" of real estate and the Bravia brand.
I personally do not know which one is better in Picture Quality and 3D Quality and would really like to base my decision primarily on Picture Quality.
I would love to throw in the Samsung UN65C8000 in the group and it might actually win solely based on the 65" factor; but the $5999 price tag is something I'm not willing to pay.
7.1: Polk RTi12 Fronts, RTi8 Surrounds, Monitor70 Surround Backs, CSi A6 Center + Outlaw LFM-1 EX Subwoofer.
Yamaha RX-A2000 AVR
Epson 5010 3D Projector
Intel Sandy Bridge 3D HTPC / Blu-ray Player