I have 50 inch full that you can see in left corner of photo below(no batteries in digital camera so I was using phone to make it, sorry , they are in bad quality) and three 24 monitors. Once I've got three monitors setup, I can't remember when was the last time that I've worked on big screen. ( and I've thought how cool is to work on 50 inch screen on half meter from your eyes until then).
Multi monitor setup is is so much better because windows is saving positions of your programs. You can move them around and actually having much more working space. There are so many things you can do with three monitors, for exmaple,: use first one to edit porn for job, second one to watch your favorite and third one to check content and see where it will go on between those two.
I have problem with space to put all devices I am using, so I had to choose 24 inch screens, and I wanted at least 27. But it is fine. If you are going with three monitors, choose models that can be rotated. See example below:
