Fair answer to be sure , especially the price point , and it`s a fairly fair tv 2 boot !!
Before you completely commit , see if any of the 4K`s are in your price range.
The bigger the screen , the worst it is going to look , really.
A 1080P res on a 46" will look somewhat better than a 70 ~100 "
But __ the processing is very good and does a good job of allocating the right pixels to the right area to provide maximum viewing despite more real estate to work with.
I think you would not have any view issues with a 60" or 65".
4K streaming is here yesterday , Amazon Instant Video , ( there`s an app for that ! )
started streaming 4K last year , not a ton of free stuff , but some. ( free = Prime Members )
Today Samsung is on top , with Sony struggling , and LG not sure what to make and I think we lost Toshiba down the line somewhere.
All that is left are the disposable tv`s like Vizio`s and the like. ( no joke , if a Vizio breaks under warranty , you get a new tv , and chances are that will break to , but not during the warranty time , because the last company that did warranty resets was Sony )
OK___ must press on
, burn`n daylight ...etc.