And how many backlit zones do those that you linked have? Probably not disclosed cuz its so low. The high end panels can have 100+ and they cost an arm and a leg.
Actually the E-series Vizios have local dimming.
http://www.cnet.com/news/vizios-cheap-e-series-tvs-are-brimming-with-local-dimming/
Ok, it's not going to be as good as on a $1500-2500 2015 4K TV, but it's already happening. On the other hand, on the PC we get low grade, low quality LED/LCD panels as per usual. I've seen the same for the last 10 years. The best LCD/LED panels never make it to the PC yet we are charged $700-1000 for small panels.
Samsung UN55HU8550 - "The Samsung HU8550 offers our favorite combination of picture quality and features in a 4K TV this year, making it a good value despite the high price."
http://www.cnet.com/products/samsung-un50hu8550/
Inputs: 4 HDMI 2.0, 3 USB, 1 Component, 2 Composite
Backlight: LED (Edge-Lit
w/Local Dimming)
Accessories Included: Smart Remote Control,
4 Pairs of 3D Active Glasses (SSG-5150GB)
55" of 4K local dimmed LED for
$1600 USD.
On the PC we are asked to pay $900-1000 for inferior Acer and BenQ 32" models, without local dimming, no 3D glasses for movies (not that I care but still it's free), no remote control, no 4 HDMI 2.0 ports and screen size a whopping 42% smaller.
Here in Canada a 50" 4K Samsung is already $900 CDN:
http://www.futureshop.ca/en-CA/prod...8aa067a482cf8f107ac9a9een02&SearchPageIndex=1
Moral of the story: For as long as I can remember, PC-centric monitors from Asus, Samsung, Acer, Dell, BenQ, etc. have been and will continue to be overpriced. I foresee 2015-2019 4K TVs outperforming 99% of all 4K PC monitors in nearly all performance metrics, including features, with input lag and fixed 60Hz performance being major disadvantages. However, since pushing beyond 60 fps maxed out in modern games at 4K is wishful thinking anyway, I don't view that as a disadvantage. A lot of LCD/LEDs have decent input lag for anyone but the most hardcore/semi-professional gamer. Perhaps when 4K 120-144Hz PC monitors come out, then it will be different. The biggest "saving" feature for high prices of 4K large PC monitors will be FreeSync/GSync as I doubt this tech will be available on consumer 4K TVs.
Obviously it's not comfortable to game up-close on a 50-55" 4K TV but the point is we get charged very high prices for 27-32" monitors with inferior LCD/LED tech and features just because they are PC monitors.