John Lewis will give you a free 5 year warranty and you can also ask for advice either in store or via their help line. These forums have lots of people who buy from cheap sites and then expect forum members to help them set them up, the idea that they should read any instructions seems to be an anathema to them. Modern TVs from major manufacturers seldom go wrong but repairs are expensive if they do. In my experience Sony TVs are good and reliable. Although the TV you are thinking of buying is 4K there will be no 4K on Freeview in the foreseeable future and the TV will require a STB if it ever starts as no terrestrial transmission format has been standardised for the UK. A subscription 4K channel is available from Sky and some online services.