Join Date: Dec 2008
Location: Bruce County, ON
I personally don't think 4K is worth it at this time. I can visually tell the difference between 720p and 1080i, but can't between 4K and 1080i.
If you have a 4K TV, and can connect to YouTube with it, there are numerous 4K videos (even a few F1 ones) that you can watch and toggle the resolution to see what you would get.
You can also see if you have any lag watching the 4K videos - you may need to upgrade your ISP or package to watch 4K depending on what you currently have.