Hi everyone, I have been holding off on upgrading for as long as possible in order to wait for Apple to evolve the MacBook Pro enough to justify upgrading. Currently, I have the Early 2011 13" MacBook Pro (4GB RAM, 2.3Ghz i5 CPU, Intel HD 3000 graphics). If I were to upgrade to the 15" MacBook Pro that was just announced, would it be worth it? I mean, would I actually SEE the difference? Like better performance, etc? Enough to justify the cost? I appreciate any advice!