For productions that will be published via a computer monitor and streamed (like from Youtube) we use Full HD (can be defined as 1,92K) as a final format (1920 x 1080 and 60 fps).
4K (mainly defined as 3920 (or 3840 for most monitors) x 2160 is extremely more taxing on the computer than Full HD, especially with 60 fps (about four times more than with Full HD).
And in order to use the full capability in an editing software, like Premiere Pro, you have to buy a very powerful (also read expensive) graphics card and top up memory capacity for both computer and graphic card.
2,7K (2704 x 1520) needs about 40 - 150% more power in the computer compared to Full HD (processor, graphics card, memory).
Right now we find that recording and editing in 2,7K gives us the advantage of a better quality than Full HD (noticeable even when downgrading the final product to Full HD) and the freedom of cropping (zooming in using parts of a recorded segment), easier also when rotating a picture and keeping the frame format.
A complicating factor is that Youtube use a different form of compression for 2,7 and 4K, it gives (we think) a better final viewing quality than with Full HD video uploads.
And finally
mobile welding atlanta, if your camera can use 60 fps (frames per second) ALWAYS USE IT!