well, I'm talking from my personal experience with those brands in general.
I know brands change (hence my stay away from modern samsung despite making marvelous crt monitors and tv's back in the day) but for what I've experienced LG produces good tv's for a fair price, sony offers excellent tv's for a good amount of cash and my AOC tv was cheap and is compatible with absolutely everything (1080p, has an s-video input with is now extinct, vga input, proceses 240p correctly and has little to no lag). that may very well change in the near future, but doesn't make my statements less correct.
I've experienced that cola is great to drink, and I've had good experiences with water. Orange juice is good as well, but at a price and grape juice is even purple, so it fits with what I am wearing today. All from personal experience.
Here is what you essentially said from a market logic perspective:
Buy from a chinese manufacturer, because they are cheap and have everything, but also buy from the top japanese brand, because they are good, and buy from the currently most popular korean brand (which is assosiated with quality for something entirely different), because they are fairly priced (but they arent as cheap as the chinese products?). Oh, and look at JVC, which at least for europe are TVs manufactured in turkey and by manufactured I mean - buy chinese panels and electronics, screw them together in turkey (because shipping them assembled costs more money).
All of that is contradictory.
Then you've noted, that you only recommended those "brands" because of personal buys (one each) you've conducted - and now you feel that others should buy what you've bought.
All of that is based on feels.
In old roman days they had charriot races, pretty much every day of the week. The had four teams. The blues, the greens, the reds and the whites.
Thats the level of most peoples decision making. It hasnt changed since then.
The funny thing is, that the real answer to this question is "get the cheapest chinese TV that fits your need", especially on "smaller screens" where edge lit LCDs are fine.
Any of the brands you named, uses chinese or taiwanese panels they dont have produced, Sony does for sure. They buy them by certain quality characteristics on an open market. You will never "see" which one is better. There are hardly any platforms that test which cheap TVs are better in what aspects. You are buying blind. Good luck.
Thats the actual 'recommendation' but it sounds so much worse than 'I've bought LG, and think I didn't through away my money for crap, so now you should buy LG too.'
If anyone is listening to that as an informed opinion - it cant be helped.
I'm for the blues, and think that I'm a great expert on the sport of chariot racing, so you should be for the blues too. Also, I'm an expert on drinks, as you can see in the first paragraph.