well i have been uusing BIG tv from 4 months and 22 days,the video quality varies when there are less channels like 186 its better but when they increase the channels to 191 the quality degrades with lots of articfacts,they keep adding or taking out channels.the sound qulaitys is good and its comes in stereo.
the stb has a component out and my sony lcd says that its receiving a 576i video. now the menus hangs a lot the stb can get heated up,once this occurs the channels changing might take ages we are talking about 20 secs for the stb to respond.this problems i face it almost every day,and its not a problem just for me since many BIG tv users are complaining the same.
there is a option of 16:9 but it doesnt work.so if u are a lcd or plasma users u have strech the image to fit the entire screens so people look funny since every one is fat but overtime u will get used to this.
my complain is the annoying big tv symbol which blocks the scores particularly in F1 ,also in some news channels.
the channel info and the menu is big which takes the entire bottom of the screen when u are changing the channels it takes 3 sec for it to disappear in that time u could loose crutial caption in news channels or sports scores.
certain times the EPG doesnt show the right information.and i am repeating again the stb hangs quite a lot so the entire menu,channel changing can take ages or even fail to respond untill u hard power off by the AC switch.