Comment Try a pivoting monitor in "tallscreen" mode. (Score 5, Informative) 503
If you do a lot of writing/coding, reading PDFs, etc., something that is really nice to have is a monitor that can be pivoted 90 degrees, so you can view a full 8.5x11" (or A4) document at 100% or better magnification (at 1200x1920 or 1050x1680, for example). Even a 1920x1200 widescreen monitor tends to make viewing a full sheet cumbersome.
Even better is one tallscreen monitor in the center of your workspace and one or two widescreen monitors flanking it.
At Newegg, you can find tallscreen-capable monitors by searching for "Stand Adjustments : Height, Pivot, Swivel, Tilt" when browsing LCD monitors.