Because my 15-inch Macbook Pro is acting up, I am currently scrapping on my Macbook Air (yes, 11 inches!). I recently backed up files on my Pro and felt that the screen and size was so massive, lol. Apparently I don't miss the screen size TOO much. I have to admit the utter portability of the Air and the speed of the SSD drive has spoiled me
I can run, LR, CS5, multiple tabs on my browser, Mail, Evernote without any slowdowns.
I will admit though that I am crushing on the new Macbook Pros--they are SO thin and SO light! I wonder how scrapping on those would be?