I want to buy a new telly
Going for a 50”or there abouts
Probably from AO or my son suggests John Lewis.
So...... what brand???
Looking at LG and Samsung
But the toshiba ones at same spec seem to be cheaper(price wise) and I am
Very subjective with TV's, for what it's worth my opinion is as follows:
I have 2 LG's, I was very happy with the first one, the second not quite so much. Its a QLED nanocell product and I have banding issues where black lines can be seen due to the back-light. Its not terrible by any means and is still fit for purpose but can get a little annoying.
I've also used (and still have most of) Samsung, Philips, Aldi own brand Hitachi and Blaupunkt large flat screen TV's. My personal favorite brand has been my Samsungs. The Hitachi is the worst for sound quality (like most modern flat screens in all fairness), Blaupunkt has a more grainy image and also not great sound, the LG's are generally good apart from the banding issue previously mentioned, Philips was great at the time but that was my first flat screen many years ago and was an old plasma so I can't comment on their modern offerings, Aldi was the best value with their standard 3 year warranty but their UI was clunky and not very intuitive, the Samsung have been the best in all areas including the interface as well as the aesthetics. In general I've found Sony to be more expensive for comparable models so I've never purchased one.
However you'll find good and bad models in every brand. Viewing the TV beforehand is always best but obviously not so easy right now.
I would highly recommend John Lewis as they've proven to be cost competitive and often provide a free extended guarantee but as always do the research. My Samsung came with a 5 year guarantee with John Lewis and was also the cheapest on the net when I bought it.
As for why the price difference, its down to brand premium in some instances and you'll also be paying over the odds for the newest tech. 4k has barely made any inroads in broadcasts and yet 8k models are now also on the market.
TLDR: Buy a Samsung 4k model you most like the look of, and buy it from John Lewis.