Sorry, with seven monitors on my L-shaped desk, split across three systems, only one of them has enough space for three monitors.
Really what I'd want would be Portrait : big Landscape : Portrait. Alas, the fact that they do not give them away for free is my downfall. The fiends. swoon
Really though, if I have to actually turn my head to see, what's the point? (Disclosure: I wear glasses, so I don't count all they way out to the edge of my peripheral vision, just to the edge of my glasses.)
Though I have a friend who was like OCD-level bothered by the gap between monitors and ended up getting a good deal on a curved 55" 4K TV. Dot pitch was the same or better I think he said.