[ezolotko]

As a professional software developer I would say a multi-monitor setup indeed brings not much extra into my workflow (except maybe for VS Stack Trace and Output panes on a side monitor).

However, as a hobbyist 3D Artist, I would say multiple monitors are a must. When you are modeling you need beauty drawing/different projections side-by-side. You are unwrapping - you need UV window. You are working in Photoshop - you bring all the brush/layer/properties panes to the second monitor, etc, etc.

So this really depends on your task. When your primary UI is a text editor with shortcuts is one case, but if your environment is a mix of an art studio and a Boeing control panel, that's a different situation.