Daekar3 :
I feel sorry for anybody that keeps up with TV and monitor technology, they bring out so much new stuff all the time. I've got a 32" 720p TV that still looks great and two ancient flatscreen monitors that run on DVI. They don't look any different from the new ones, and 1920x1200 doesn't look any worse now than it did years ago.
Honestly, I feel like they keep changing the standard so much it would be a bad idea to buy a TV in the next 2 years before things are nailed down.
There's a middle ground between keeping up with the latest, and using outdated technology. $300-400 would get you a 4K TV *FAR* superior to your ancient 720p TV. That is hardly "keeping up" with TVs, since there are higher-end TVs with HDR10 (soon 10+), 120+ refresh rates, better panel technologies, upgraded backlighting, etc. But you don't really have to worry about newer standards if you're buying a sub-$400 TV. For a monitor a decent modern IPS panel would blow away your older displays. There's a lot of factors but for even a fairly basic Vizio 4K set would be worlds better than that old 720p panel. Combine that with an XB1 S or other true UHD BD player and if you don't see the difference... the problem is with your eyes.
I'm not kidding or being sarcastic, maybe you have cataracts or other vision problems. When people say there's a difference between 720p, 1080p, and 4K... they're not making it up. Again, there's a lot of factors but all else remaining roughly equal: a much higher resolution and newer colorspaces combined with true UHD source material = better visuals. This isn't some giant conspiracy where everyone is lying to you, trying to trick you into buying a new TV. I don't care if you buy a new TV or go back to a 480i CRT. But don't lecture people about how you feel sorry for them for owning superior displays that genuinely look better.