Which HDTV is better: 58" 1080p vs 55" (4K x 2k)

[barneystinson69]

snyps said:

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...