I am about to buy a new computer. I will continue to work very long hours in 2009 and it's in front of the computer all day. If anyone needs a boost in productivity, it's me.

I do general biz stuff... lots of emails, heavy web use, spreadsheets, word processing and viewing and drawing maps. My bro has a 24" monitor on his Mac. My monitor is 19".

From what I have read, it would boost productivity to either have a much large monitor or to have two monitors. I am leaning toward two monitors but wonder... I have staring at one monitor since 1984 and it's right in front of me. If you have two, which one do you view by default? Do you get used to it not being right in front of you? (Assuming the middle of your line of sight is right between the two monitors.)