Hey all... been lurking for a while. Nice to read feedback from so many. Bought the A3 back in October (Amazon), have a SN 39, and the tv rocks.
* No issues so far, great picture, great sound (knock on wood!). Use it for TV, and attached Roku, Wii, PS3, BluRay, Computer, and hooked up analog-out to a near 20 year old Denon receiver, and the sound is great.
* Had lip sync one time w/ streaming video, and used the lip sync settings to adjust, and that worked fine. Never needed since, but I am on OTA rooftop antenna/coax without a cable box, and get about 7-8 HD channels, and 9-10 others. Still on the 1.1.4 firmware.
* Use the "movie" setting for movies/night viewing, and otherwise use Standard (custom set) or Vivid during daylight hours w/ tv in bright room/lots of windows. Honestly the picture is fantastic, and relatives are amazed with it.
* Dislikes: Not a fan of the Vizio apps, (and can't figure out how to disconnect tv from the wireless router, so I just block the ip address in the router). Thought the tv would have Skype, and Vizio said "were working on it..." but who knows. The channel "guide" is non-existent- Samsung has a much better guide built-in to their tv's with "next show" etc.
But for the price, the Vizio was a fantastic deal, and I really like the feature set. Have the square trade warranty just in case, but hope the tv lasts! Best regards-