There is a lot of misconception there .
All of them are RGB TV , with the exception of LG 's UK6100 & UK6300 .
The Panasonic TV doesn't has 6 different color subpixels , and it certainly does not reproduce colors using 6 different subpixels.
The " Hexa Chroma Drive " is actually what Panasonic calls their CMS ( Color Management System ) , which allows TV users to finetune the colors reproduction to more accurate extends .
If you don't calibrate your TV , it is nothing more than a marketing term for you , because you will be using their out of box settings.
Like I said before , a side by side comparison in the display shop is potentially pointless , because you need to make sure every TV in comparison are calibrated to the same settings .
It is possible the specific unit you are comparing are in its more accurate display mode , compare to the rest .
There is also the factor of Panel Variance , because these LCD TV are the general product of mass production. Unless they are sending you the exact same TV they showed you in the shop , what you saw from the shop may not be what you will be watching in your home . Even among the same model , one may be slightly brighter than another , slightly better screen uniformity , slightly more accurate colors etc etc ... you get my point.
I don't think Panasonic did anything special for their VIERA series . They do finetune their OLED TVs before shipping out , because they are selling those exquisite premium babies at a much higher price .
It is unlikely they are going to calibrate their entry level 4K TVs , at least not to the same degree as they do with their OLEDS which has garnered many praises for being uber color-accurate.
A-freaking-men. Shops just want to show eye popping blinding colors to you. That's why the TVs have shop and home mode no? Most people are usually victims to fancy marketing terms.
I'm pretty new to TV as i just use PC mostly before. So i got the LG 49" UK6300 which fits my small budget. Frankly to my eyes, i don't really notice the color being washed out or loss of sharpness. Maybe because i'm actually using it as a TV instead of sitting 1cm from it. I just followed calibration from rtings.com and it looks good to me. No more skin looking like they are being burned by the sun. Decent HDR performance too especially in colorful scenes. Dark post apocalyptic drama on Netflix with HDR don't really pop as much as the Chef show. I can't really compare between my IPS RGBW & VA RGB Samsung 43" NU7100 that my bro bought (which costs more than my 49") for my dad back at my kampung unless i put it side by side. Too bad that 5 months later, i noticed there's light bleeding from the top edge of the Samsung in dark scenes. Bad luck i guess.