[tetraca]

You categorize your screens. One screen for dev work, one for communication, and one for documentation/browsing. That way you can alt+tab between your primary work tasks with a tiny eye movement.

[dheera]

I used 2 screens for a while but I went back to 1. I would do 3 or 1 but not 2. 2 was bad for my neck. And I can't fit 3 screens on my desk.