I've kicked off my research adventure. I wanted to get a larger set (yeah, I know, isn't 70" big enough?) and up my technological capabilities. I narrowed it down to a few different sets. The Sony 900E, the Samsung MU8000 and the Samsung Q7F. Only the MU8000 is available in the larger sizes, while the other 2 maxed out 75".
Out on a whim, Tammy and I decided to stop by Spencer's TV and appliance to see what kind of TV's they had to offer. They are a local outfit, so I didn't know what to expect from them. The salesman was nice and he was able to give me quotes right off the bat. Amazingly, the quotes for the TV's they had (Samsung sets) were all lower than any retail outlet I have seen (even through Amazon affiliates). What really made up my mind was the fact that they were able to give me a price $400 less than any price I have seen anywhere on the MU8000 82" set.
So a few wrench turns later, a trip to Home Depot to get a new machine screws that had the proper mounting depth for the set...

Of course, it doesn't stop there. I learned the my 'old' receiver, the Denon 4200 was not able to push the needed bandwidth to support Native 4K output with HDR. So I looked into upgrading to the Denon 4300. I ordered it online and much to my surprise, the company was out of the 4300 and they sent me the latest variant (the 4400) for no extra charge! Talk about customer support! Electronics Expo, you are definitely deserving of my future support.