All we have in our town is a Best Buy as far as decent electronics retail goes. I used to work for them and know that they should be accommodating. Honestly I'd love to bring in my Xbox One and test Netflix 1080 and any action game supporting 1080, but this is of course unrealistic.If you've got the money honestly just get a 4K TV... If you get one with a good up-scaler you'll notice the difference straight away. Can you test one out in store with some of your own content?
I've come to the conclusion that this is just an awkward time in this generation of TV. If I get the 1080 but larger set, I'll be wishing I got the better picture. And if I get the 4K I'll just be wanting the bigger screen. Of course there exists a compromise, but it comes in the form of a pricey Samsung or Sony 50-55" that has a good upscaler, HDMI 2.0, etc.
Therefore, I think I'm going with the Vizio 1080p 55" set that I posted above. It's big, yeah a worse picture than a 4K, but by no means an awful picture. And something I have to keep in mind is, during a normal school week, I'll only be using it ten, mayyyybe fifteen hours a week considering I'm a full-time student in a challenging program. After a long week of class and homework, I really don't think I'll be too picky with my viewing experience.