No such thing as future proof – it’ll be out of date in 18 months no matter what you buy. My main telly is a Panasonic Plasma and is the dogs danglies and I have yet to se any telly at any price with a better picture. But more relevant for your budget, i’ve also got a Samsung LED smart TV. Pretty good picture – excellent with an HD feed. Its connected to WiFi via a USB WiFi dongle (£20 off Amazon – I didn’t get the £80 proper Samsung one). It is a bit slow and clunky to navigate round, but once you’re streaming something like iPlayer, YouTube or Netflix its fine. I can also access my NAS server so can access all my media files.
Having said that, I recently stayed in an apartment on holiday and there was a 32″ Tesco own brand TV (forget the name of the brand). I’ve no idea of its spec but I was pleasantly surprised by the picture quality, certainly passable and watchable, though not as good as my Samsung, and very good when playing DVD/BR.
I’m afraid i’ve been underwhelmed by Sony’s. My mate got one and I was not that impressed – a good picture, but for the price (or cheaper) there are alternatives that are just as good, if not better.