Samsung flat screen TV’s

The answer is to get your TV professionally calibrated after you buy it. That way the TV does not have to struggle to produce a great picture.

That's true, but you can also find calibration settings on internet.  There is not so much variation from unit to unit.  I bought Sony because of great reviews, but picture in store was horrible.  At home it was even worse.  After entering calibration data it is by far the best TV I ever had - natural vivid colors, deep black, great sharpness etc.
Sony looked "pale" in store, but Samsungs were over-contrasted and over-colored.  Professional calibration would be the best, but finding some calibration data is necessary. 

Been watching my Vizio 50 inch for 8 years now, not one single issue. 

I owned a 36" Samsung. At the 3 year mark the screen went black. Contacted the company, they only service the high-end Smart TV's. 

Samsung manufactures TVs in several countries. They have recently closed their factory in China.

Samsung purchased in 2012 went black last week. A thicker larger Vizio from 2007 is still great. TCL-Roku replaced the Samsung now. 

LG and Sony make the best OLED TVs and the picture quality is spectacular in both much better than anything LED.