Should I get a 1080p TV or a 4K TV for gaming?

[fleischr]

Go with the option that gives you best pixel density.

You'll notice far more jaggies on a 65" 1080p than you would on a smaller 1080p screen, or even on a 32" 720p screen. If you're going for a screen larger than 60", I think 4K merits the consideration.