I just got my 15" Macbook Pro coming off of using an HP Pavilion dv-7 with 17" screen, and I deliberately chose the 15" over the 17" after comparing them at an Apple retail store side by side. I was coming from a really bulky Windows laptop and the idea of something so much lighter with such a great resolution was impossible to resist. It wasn't that I didn't also love the 17" MBP, just that to me the fonts and application windows, etc... actually looked better on the 15".
I use mainly iWork, Scrivener, the Gimp and Seashore, iPhoto, iTunes, Garage Band, iCal and iChat at the same time. Oh, and Mail. And Stickies. And Dictionary. That's about all. I never have to wait on anything, and with Expose I can shift around fairly easily. You could also use Spaces for virtual desktops if you want to really keep things clean and neat.
I use mainly iWork, Scrivener, the Gimp and Seashore, iPhoto, iTunes, Garage Band, iCal and iChat at the same time. Oh, and Mail. And Stickies. And Dictionary. That's about all. I never have to wait on anything, and with Expose I can shift around fairly easily. You could also use Spaces for virtual desktops if you want to really keep things clean and neat.