I'm in between getting an iMac and an iPad or a 13 inch macbook pro and an iPhone. At home I will need to be able to do Photoshop, After Effects, Illustrator, Fireworks, Screenflow and iMovie. On the go I need to have a computer with me for class for taking notes and using PDF's as my textbooks, and updating my twitter, facebook, tumblr, etc etc. Which is the better combo for me? Thank you in advance. 