Hello, I have found that 4:3 works better for word processing. Yet 16:x is better for movies. Personally I use word for translations, so i place one document in the upper half of the screen and the second in the lower.
On a 16:x I have to palce them side by side. I find the first option better, or maybe i'm just used to it.
It's all up to you. Any monitor can arrive DOA (dead that is).