Should I buy a 15" i7 or a 17" i5? The way I have them configured, both have high res matte screens, 4GB, 500GB@7200. The cost is the same: $2750. I am a designer by trade, and this will be my main work laptop. I focus on web stuff, but I do a fair share of illustrator stuff as well as some video editing / comping. Also getting into iOS app design, so I'd need Xcode to run smoothly. Are there any known problems with either model? I'm not aware of any, but it never hurts to ask. TL;DR: I can't tell if I should go for slightly more pixels or slightly more processor.