Element ELEFW581 58" 1080p 60Hz LED HDTV

vs

Sceptre U550CV-U 55" 4K Ultra HD 2160p 60Hz LED HDTV (4K x 2K)

I noticed these ridiculously cheap tvs 

http://www.walmart.com/ip/Element-ELEFW581-58-1080p-60Hz-LED-HDTV/49703068?action=product_interest&action_type=title&item_id=49703068&placement_id=irs-302-m3&strategy=PWVUB&visitor_id&category=&client_guid=9aa7dd96-3588-42ad-8351-332e239554de&customer_id_enc&config_id=302&parent_item_id=46784939&parent_anchor_item_id=46784939&guid=3043c5f4-f10f-4e27-b552-f507cdc7bc67&bucket_id=irsbucketdefault&beacon_version=1.0.1&findingMethod=p13n

http://www.walmart.com/ip/46784939?wmlspartner=wlpa&adid=22222222228035583587&wl0=&wl1=g&wl2=m&wl3=78193577672&wl4=&wl5=pla&wl6=152160231632&veh=sem

can someone help me decide which is better?

None of those are high brand named TV's, but the 4k TV is rediculously cheap. 399$? It almost seems like a typo to me...

I'll point out that the 1080p is normally $479 is it's on a better sale. The 4k is actually a 4k x 2k. I've never heard of that.

You should see what your viewing distance will be from your TV to see if the 4k/4k TV is worth getting. If not, I'd opt for the slightly bigger size TV thats not only cheaper but will not waste your money on something that you will not use (very low 4K content available, and once it will be available it will be expensive) or can't actually feel/see a difference from the 1080p counterpart.

They'll fall apart 1 year from now, beware.

4K TV's are where HDTVs were in like, 2003. Not worth it, unless you have money to blow. By the time 4K is standard, and everyone is providing content and physical media, the TV's will blow current 4K TVs away and make them seem like ancient tech.

get this tv http://www.bestbuy.com/site/searchpage.jsp?st=vizio+50%22+tv&_dyncharset=UTF-8&id=pcat17071&type=page&sc=Global&cp=1&nrp=&sp=&qp=&list=n&iht=y&usc=All+Categories&ks=960&keys=keys

Unless PS4k is a real thing. Then I think there will be a push for 4k in the near future by Sony (which will be big). To the OP I say wait to buy anything though. Christmas during Black Friday or Cyber Monday is going to be the best deals, and by then I think we'll have a pretty defined sense of what (and if ) the PS4k is.

They're cheap for a reason. Get a brand name TV. Trust me.

You don't want either.

But if you're looking for a lower cost 4K, you can't go wrong with an XBR55X810C. They have a delicious input lag and response time, especially for a 4K, and the X1 processor will beef up any console gaming with unrivaled anti-aliasing and noise reduction (upscaling, for the laymen).

Don't get ripped off by no-name brands like Silo or Seiki. Stick with the big names. And among those big names, avoid:

1. Any Samsung or LG 6000-series models: They're essentially bad panels repurposed as "entry level", and then given bad hardware to cut cost. Expect slow input lags, slow response times, bad smoothing, and plenty of artifacts (especially on 1080p inputs)
2. The 43" and 49" 830C's from Sony: not quite as fast as the 810C, but not as good looking as the 850C or 850D. A waste.
3. Gosh, LGs altogether: They're awful noise algorithms will leave the screen littered with artifacts, especially during fast games on console. Dolby Vision's 7% market share isn't worth that unless you want an OLED...
4. ... Which is bad for gaming and being a monitor: Despite the record setting low input lag and response times (low is good), OLEDs are a high risk for burn-in, which happens when static images (like heads up displays or task bars) stay in one spot too long. If the bad nose algorithm and burn-in aren't enough, OLEDs have a very small number of black levels. So when you're watching the dark knight (or playing Bloodborne), all you'll see ate faces walking around in a perfect black screen.
5. The only date Vizio are M and P Series: Like with Samsung and LG, Vizio has entry levels that are actually failures of higher end models. Stick with M and P and you'll be fine.
6. Do not buy a Panasonic x400 under ANY circumstance: I've turned my nose up at a lot here, but the x400 is trash. Just complete trash. It looks worse than average 1080p TVs.
And 7. Curve is fucking stupid, don't pay extra for it: it catches more flare and narrows your focal point, so others have a harder time sharing your TV with you. Good for a monitor - not a living rob TV.