Hey all, I'm about to sell my 2008 20" iMac to get a new 2011 version. However, I'm still torn between the 21,5-inch version and the 27-inch version. As a consequence, I'd like to know what helped you make up your mind when you bought your first 27-inch screen. What kind of activities do you enjoy more on such a big screen ? For instance, I don't see how a 27-inch would be more convenient for internet browsing, MS Office work or things like that. However, it might be helpful for Aperture or CS5 ? I'm an amateur photographer, and I only used to work on iPhoto because my last computer couldn't handle Aperture. However, I have to convince myself that I will really benefit from the 27-inch screen as it will cost me 500 euros or so more than the 21,5 base model. I'd love your feedback on the screen size choice.