New TV disappointment

[stinkyspanner]

Hi all, we're extending our house and so thought we'd put a new telly in the extension. I'm totally out of the loop with what's around these days, the last one I bought was a Panasonic plasma which still works very well, no screen burn or anything like that. I think it's about 50".
Anyway I know you can't get plasma anymore so went and had a look at the latest stuff in John Lewis and I have to say that everything looked a bit average, even the expensive OLED ones. To my eyes they all seemed a bit pixelly, particularly on moving things (and I like watching car racing so that's not good!) The sales guy showed us the different set ups like vivid etc which were kind of impressive but so bright as to look totally unreal, almost like a computer game.
Bearing in mind I'm only after a similar sized 50" set for about £600 I can't help but feel I'm going to be disappointed.
Hopefully this doesn't come across as a 'everything was better in the old days' type grumble, I was just genuinely unimpressed and so was Mrs Stinkyspanner (not for the first time it has to be said)
Could it have just been John Lewis 'showroom' environment, were we too close to the screen?

[stinkyspanner]

Thanks all, I think what I'm talking about is motion blur rather than pixellation.. To my eyes they all had it to a greater or lesser extent
I'll go to Richer sounds and see what they say