I've found 4K's within budget. My friend in Kansas can get it at a MicroCenter near him and bring it when he visits here. No shipping and I can get in store only bargains that way. I should convince myself to get nothing or a used thrift store 1080p but you know what is going to happen.*
My wish to have a higher res screen is for my viewing but Rayman makes a great point about audience. They will view on many devices but unlikely to have a superb monitor. People set the brightness of their screens differently. That could make a picture look black or washed out bright. Agree about price vs quality. Us "poor" folks know how to get a good deal on things we don't need ha ha ha.
Bitkar. Right about non-res factors being important. I see 4K TV's together in stores and the OLED ones look better. That's contrast and colors. I've watched videos on my slightly under 1080p monitor in 2K and 4K mode and they look better. Since I'm not really seeing 2K or 4K some other factor is at work. However I see a difference in monitors/TV's with different resolutions so for me, while it is not the only factor, it is an important one.
"If you will see 2k with all other parameters better than some 4k for the same price, go for that 2k." If you mean if a 2K that looks better than a 4K due to the non-res factors then would be reasonable. The low end ones I've researched have about the same other factors and $20 or $30 more gets a 4K. I miss trueSpace but I don't use it now.
*A rich guy gets money and thinks, "I will invest this money and create more wealth." Regular guy thinks, "I will save this money and accumulate wealth." Poor guy thinks, "Pizza!" (Or, "high res screen!"

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