Hello everyone. I am still undecided whether I should get the i5 or i7 13 inch MBP. For my needs the i5 is probably enough (photoshop, some cubase which was running just fine on my 2009 MBP, so the i5 is already an upgrade from that...), but my main need is portability. And battery life is extremely important in terms of portability. Now, is there a big difference in battery life between the i5 and i7 versions? Because if there is, i'd take more battery life over the probably unnoticeable difference in power between the 2 processors.