Okay guys, really would appreciate advice here.. I just purchased a new (sealed) 2013 13'' Retina Macbook Pro with 2.6ghz i5 & 256gb ssd for $1100 off craigslist. Guy gave me his receipt, and warranty is verified until August 2014. Should I keep this (considering I got such a great price)? Or, in your opinion, should I resell and opt to pay an extra ~$500 for Haswell rMBP? Price is a factor, but if Haswell rMBP offers significantly more battery life & performance, I don't mind too much spending the extra money... but also, I am not a heavy user (will not be gaming or editing), just moderate power needs, and any more than 8 hours per battery charge would just be a bonus, not necessity. So really, the question is, do you think the Haswell rMBP will be worth the extra ~$500 over my current rMBP? (Taking into consideration the price I got for my 2013 rMBP) Thanks much in advance!