Summary: Picture is nice. Sound is a lacking. I will end up buying a sound bar to go along with this. We use Netflix 80% of the time and one thing that is VERY annoying is black flashing while watching any content. It may occur a few times a minute or once every 30 minutes. It varies. From research I've done this happens when the video streaming mode changes.
Summary: Bought this tv a few weeks ago. The picture is fantastic after tweaking the picture settings! The blacks are great for an LED lit tv and not much of a flashight effect that you get with some LED tvs. The sound is not bad at all as long as you max out the bass (+15) and turn bass boost on. I also have a sound bar and use that most of the time but can't complain about the sound of the TV. I have xbox 360 hooked up to the TV and see no issue when gaming.
Summary: I picked this TV to replace an older Samsung LCD; my primary uses are games, sports, and the occasional movie. I used it for 2 weeks steadily. This TV was easy to set up - it found my Wi-Fi network quickly and offered a firmware update which installed without hassle. The remote is easy to use and the menus are responsive. The settings are, unfortunately, few, as it seems to lack advanced picture controls (white balance and the like).