When you have two monitors, is your head always turned to one side? That always hurts my neck, so I wind up with the second monitor relegated to the side, where I never actually look at it.
Why would your head always be turned to one side? Have one monitor in the middle (the main one) and secondary either left or right. Having split screen right in the middle of my field of view is ridiculously unpleasant
I have three monitors. The left and right are turned vertically. They're all 30". So the main screen is in the center and I keep slack/email/web browser with docs/info on the left and usually Twitch DJs or Spotify on the right. So usually I'm looking forward but I look left briefly throughout the day.