P.C. Richard & Son has the Samsung UN65KU6300 available for $799.97 right now, which is $300 less than the nearest retail competitor and $500 off the TV's list price of $1,300. CRIKEY, THAT'S A HOT DEAL!
To wit, I paid the same price for a big, ugly 15-inch-smaller not-4K Samsung dumb TV in 2012—that should illustrate what a good deal this is. Oh, you also get free shipping! You have to progress all the way to the checkout phase to see the price, by the way.
I reviewed the 50-inch KU6300 in November last year and found it to be simply an awesome TV. It's not a premium HDR set like last year's quantum dot-equipped SUHD TVs from Samsung, but it still supports the HDR10 format and boasts 4K resolution and good color production.
The step-up KU6500 series is curved, which you probably don't want. The KU6300 or "6 Series" is one of the best non-SUHD TV series from Samsung's 2016 lineup.