I prefer 21:9. The form factor is much more friendly (I almost always want two different things on screen while working, but I rarely need more than that), seem

I prefer 21:9. The form factor is much more friendly (I almost always want two different things on screen while working, but I rarely need more than that), seems less obnoxious on the desk, and I found the display performance much faster on my somewhat underpowered tablet. Cheaper too, which is nice.