First I will post what will help narrow your decision. With more info I can post more recommendations. Here is an intro, but if you want good info to to avsforums.
Budget Range - for the TV.
Budget Range for new video devices.
Primary viewing conditions.
Primary viewing: Sports? TV? Movies? Games?
Are you familiar with various motion technologies and what it like to disable them?
Are you familiar with flashlighting?
Do you know if you want LED or Plasma?
The worst thing about buying a new TV is that none will be calibrated. They will all be setup in a manufacturer demo mode and they are in general set to about the worst possible image you can view. It will have high contrast, high brightness to compete with the others on the show floor. Noone can change this since it is the mode that they place it in for demos. Judging a TV in this mode is pointless. So the review sights are the best to go on and avsforums site is the best.
Summary.
New visio with full array would be interesting.
Sony has the best motion technology.
Samsung and LG are good LED for the money.
Unless you have about 12k or more, or can live with < 65 stay away from 4k.
Do no buy acurved screen.
There will be flashlighting and it will vary per unit. It took me 3 to get something tolerable and this was a rather highend unit (UN75H7150). Flashlighting will get worse with size, so it is something you have to live with on edgelit LED. I'd give the 75" I have an 8/10 and the 65 of same model a 9/10. You will have to see a unit in a dark room and turn off the LED backlight and highcontrast stuff to witness the flashlighting. Tough to do in many places before you purchase.
It is unlikely that flashlighting will bother you much if your primary use is sports. Sport and crazy flowers and nature look very attractive at the demo high contrast settings, but in reality are completely unrealistic.
The default settings... as above and for sports will really only work well for bright environments, even if unrealistic.
When you take the 75" and view from 10' the resolution is great and the brightness on default settings will turn your pupils to pin holes. LED backlight can be off, but I use 3/10 and cinema settings on Samsung. Then turn all the motion off -- unless you get a really nice sony.
Of course you can't do any of this in a big box place like Best Buy, but if you can buy from an A/V store so you can check everything out. This is what I did and it was as good of a deal as best buy for a current model year. If you can put up with last years tech, then you can get all kinds of deals. Some local A/V places may also have lightly used high end stuff, if you take you time.
Also 60 vs 120 vs 240 Hz. This is only as good as the systems motion processor and whether you will use 3D. If you use 3D, you need 120 Hz and 240 will benefit you for 3D. if you do not use 3D, then motion will definitely play. Crappy motion, might as well only have 60 Hz and disable it completely.
Good motion like Sony, then higher is better.
Cinema really is only 30 Hz. So anything more, means that the TV is processing the image at a higher frequency. For me the only motion system that seems fluid and enjoyable to watch is Sony. I disable motion processing on every other TV I have owned. And of course if you are gaming, this should be turned off regardless of make/model.
