Space limitation but after setting up one in portrait mode and getting used to it, I can’t imaging myself going back to two displays in landscape mode.when you say you can't do duals in landscape, a technical limitation or you don't like it? I'm coming from a 49" dell and finding 2*27" studio displays hard to get used to in landscapeI was wondering if one in portrait would work but I can't really think of what would work better in portrait mode