[Dean]

I agree that there are grade A & B panels based on defective pixels(dead or frozen) and/or clouding or Mura, but a Samsung model 1234 at Walmart has the same panel that meets the same standards as a Samsung model 1234 at Best Buy, don't let anybody tell you anything else.

Depending on the manufacturer, even the grade A panels may have dead or frozen pixels, usually dead especially on 1080p displays.

If you really want to know, research a company's replacement policy on dead or frozen pixels. That will tell you what they are setting for a standard.

Most people cannot see a few dead pixels depending on location and only detect frozen ones against a black backgrounds.

Aaron is right about the other corner sutting on the cheaper sets. Non universal remotes and fewer inputs are common ways to cut costs even if the panel is the same. You can probably save $20-50 bucks easily as a manufacturer by using a cheaper 1 function remote and limiting your number and location of inputs.

All I am saying is look at the display you are buying. Grab the remote and fix the picture settings that the stores often F with on the cheaper sets to try and upsell you. There are some damn nice sets at Walmart, Costco, RC Wiley, etc. at well below Best Buy prices often on the identical sets.