I was happy with 2 when I developed on Windows -- I'd do all my work on one and presentations on the other. At my current job I have 2 but am feeling the need

I was happy with 2 when I developed on Windows -- I'd do all my work on one and presentations on the other. At my current job I have 2 but am feeling the need for 3 because I develop on a Linux VM, so I need one for the app or log I'm watching, one for the IDE, and one for Windows.