I know there are countless threads on this topic but I would like to ask the following: I am a web designer on the side. I often use photoshop, as well as multiple browser windows, cyberduck, office etc open at once. I currently have a 13" MPB 2.2Ghz core 2 duo, 2gb RAM and notice it does stutter and struggle if i'm doing too much with it. My options are 13" core i5 MBP which I can upgrade to 128GB SSD OR 13" MBA which i can upgrade to 4GB RAM. I like the thin form and higher resolution of the MBA, however i'm concerned it will not perform as well with multitasking as a MBP? Any advice would be greatly appreciated.