I've seen some Hisense but didn't really dug into them because I'd never heard of them.
I would consider pretty much all of my watching to be non critical. When I "watch" TV I'm usually on my tablet doing other stuff and it's almost background really. Day and night viewing would be pretty equal. It's pretty well lit during the days, but I can darken the room a little. Some days the TV's on all day and night, some days it never gets turned on. When we want to sit down, put the tablets away and really watch a movie (I have an Xbox 1X and some Blu Rays and the usual suspects for hd streaming) it's usually dark, but in the summer days are longer so...
I'm far more critical when it comes to music than HT. I don't need the latest and greatest, but I don't want a pos either. That TCL I linked above is far an away the best deal I could find in a 75" with those specs. It does have HDR10. Right now I don't have HDR1, lol. Is that a 4 Series? I don't see in the description or name where it specifies.