So I ended up with the Series 8 Samsung 49" (not sure why it had to be an inch shorter.... but whatever). It physically takes up less room than my previous 47 inch, which probably took the same space as this TV would've had it been a 52" TV instead.
The UI is very responsive, night and day against the Point of purchase TV that was the Vizio 40" I bought for my daughter on a whim as I was walking through the door. But she don't know no better, so she can deal with how slow that TVs UI is.
This Series 8 came with 4 HDMI ports and required me to get a HDMI to DVI cable to connect back to the PC, and everything has worked extremely well so far, except for the fact that this TV does not auto turn on to the awakening of the PC like it will for the Switch and DVD player.
It also will not auto turn off once the source has shut off like my old Vizio would do. That is my only issue with this TV and it's for the most part quite minor, as I have it set to auto turn off after 4 hours, which is good at night, but it'll pop up during the day when we are gaming.
Which is why I prefer the auto source sense the prior Vizio had, because I ran pretty much everything though the PC, if I fell asleep or left the room for an extended amount of time, the computer will go to sleep, and then the TV would follow suit minutes later. This TV does not appear to have that feature.... and if it does, I have not yet discovered it.
Overall, I'm happy I upgraded, as I have an extra HDMI port just in case, as I really only need the 3.
The remote is very simple and comfortable to hold with that curve and minimal buttons. Just feels good to hold.
The Samsung UI also comes with free TV channels, and everything is quick to respond. It's nice.
Now I can use the TV to quickly load up a Netflix/Amazon/Hulu show or movie and not worry about whatever I'm doing on the computer making it skip for a minute, or my mouse slipping up to the TV screen and bringing up the movie player interface. I can also let the computer go to sleep while watching a movie, and not have the brightness of the computer monitor glaring at me.
Not that I couldn't do that on the old TV, but I can navigate on this TV almost as fast as the compute itself, so it's not like I have to wait for things to respond like the old TV that is much slower.
Now i still gotta return that 6 Series back to Walmart before I lost the receipt.
(or maybe I'll mount it in the garage.... and revamp my garage gym to the next level with an HD bigscreen display. LOL)