I have a 22 inch widescreen and happily have 2 apps open at the same time side by side on the one screen, esp Word and PowerPoint or Word and Sibelius. Another consideration for me would be the desk space that a second monitor would take up, which I need to work other non-computer projects.

Graham
_________________________
Graham, Korg Pa1000, Korg G1 Air, Countryman E6, Roland BA330, 2 x Roland CM-30, , Mackie SRM150