I picked up a 55" F7100 this weekend. So far I'm absolutely loving it. I have everything plugged into my Denon receiver, and an HDMI going from monitor out into HDMI2 (ARC) on my TV. So far the gaming performance on my Xbox 360 is awesome, even in non-game mode. I also tested out the 3D features with a 3D BluRay copy of Toy Story 3 and it absolutely blew me away. I haven't watched SD content yet, but my HD channels on FiOS look great as well. For reference, I'm coming from a Sony 55NX720 that failed on me after 20 months. I have typically always bought Sony in the past, and I figured it was time for something different.
The W802A looked a bit dull to me when at the store. Even when I got the remote from an employee and adjusted it a bit, the picture still looked dim. Perhaps I'm just a sucker for the brighter more popping picture of the Samsung. The bezel of the Samsung is also far more sexy in my opinion.