So i've saved up some cash (in my gap year), and after almost a month of obsessing, buying and sending back an iMac and then ordering and cancelling another iMac, i've decided to build a gaming computer for my gaming needs and buy a rMBP for my every day use, and let them share a 27" 1440p monitor. (If anyone has any objections to this, let them be heard). So basically i need to choose a configuration of a laptop to be partnered with this gaming computer for my every day use of OSX, I; - Browse the internet, with more than 10 tabs open at once, often side by side - Collect some music on there (upwards of 40gb so far) - Try to do some logic pro stuff here and there - The same with aperture. - Will be carrying to and from uni most days. I'm looking at either the 13" or 15" with the dual and quad core i7's I'm not sure how much RAM i'll need I'm not sure about 256gb sad or a 512gb ssd, as i have an external 4tb hdd. I want to be able to comfortably run a 1440p 27" monitor off it, whilst having multiple desktops and my safari tabs and word and itunes running at the same time. Can anyone make any suggestions? I'm happy to wait until the refresh of the rMBPs, but its a toss up between Dual Core and Quad Core processors?