I use 3 Dell u3011 30" monitors. I would hate to use less. I have one for my current IDE, one for a browser for testing and looking up anything I need on Google or StackExchange, and one for a console or database, depending on the task. I can't imagine what I would use six for, but I'm not going to argue with someone who likes it - and the geek in me says "I'd love to try it."