Picked up a Sony KD-55XE8596 on Monday. It's replaced a 32" Sanyo which was fine but I since had been using a 24" (I think) TV for nearly two years before, I've wanted a new TV for while, especially after trying to play GT Sport on the smaller one
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First thought was a 49" one but I measured the room and worked out that we could just about fit a 55" one. Was still drawn to the 50" Panasonic FX750 but my girlfriend didn't like that it was silver, was a Panasonic and the fact that the stand it came with looked crap. So talked it over with a guy at Currys as we were just wandering around looking at the same bloody TV's over and over again and he recommended the Sony (and he had a Sony shirt on fancy that...).
Happy with the choice so far. TV and Youtube content has looked good and my Switch is upscaling very nicely. Need to get my PS4 back off my sister now as I will actually be able to see what I'm doing but I might just get a PS4 Pro to actually make better use of the TV.
It is bloody massive though. Fills the room and we're sitting about 9 feet away.