The good TV has the good image processing chip in it that costs £100 more than the other. Well, it costs you £100 more. However, because it costs you £100 more, they don't put it in the basic TVs, they only put it in the fancy ones.
Therefore, if you want the best picture, you're going to need to need to buy one with a bunch of stupid features that you won't use, and probably don't even work that well.
Don't expect anything to ever get fixed on your TV. If it doesn't do it when you buy it, it probably won't ever - so demo if there is a specific feature you want.
When you do go buy a TV though, don't worry. Pick one that is cheap enough for you to not cry and has a good enough picture, and then get it home. Looking at racks and racks of TV screens trying to say "this one is better" and then "no wait, this one" is a disaster, pretty much they will all look fine when you get home.
Finally, don't buy any of the TVs listed here. El Reg is only listing new models of TVs, save yourself a fortune and go to Richer Sounds and get the model that the new model replaced - roughly the same features, roughly the same spec, around half the price. Even the cheap one El Reg listed, you can get a better cheaper one if you don't buy the very latest cheap model!