The picture is very good.
The sound is perfectly okay.
The TV is very easy.
Thus likely to feel comfortable even without abdominal pain on a wall bracket.
As data sources I use a PC via HDMI and a Raspberry Pi with XBMC (Xbian) as a media player.
Works perfectly. In the size I do not miss even in the movies full HD.
With regard to price / performance, so there is currently in the range of 250 mE no comparable brands TV device.