I recently found out that I am required to purchase a Macbook Pro for my major. (I am a graphic design and photography major). I already currently own the 13" macbook, so am more than excited to have to upgrade. But I'm facing the usual dilemma. I've found other forums discussing the same topic but none as of recent or since the new macs came out. So my question --- should I go with the 15" or the 17"? The price difference isn't really a problem, it's more of the features and size between the two. I know the 17" has the 8 hour battery life, but it's obviously bigger and I am going to have to bring it with me to class daily. But I feel like bigger screen may benefit me when using Photoshop, Illustrator, etc. The 15" is obviously smaller, but would I really be sacrificing anything going with that size? Has anyone bought one size and wished or eventually purchased the other instead? Opinions?