I have never bought a TV before. Now I want to buy a TV for less than £350, hopefully taking advantage of the sales. I'm in the UK. Cheaper is better, but not vital. Sound quality is important. I would like something with Wi-Fi and the best possible "smart" features I can get, both in terms of interface and services. Screen dimensions are not particularly important. I'm getting very confused between brands and reviews, so your guidance would be greatly appreciated.