Just received my refurb maxed out late 2013 rMBP with 2.3ghz i7, 16gb ram , 500 sad. Im still within my return period so was wondering if it was worth the hassle to exchange it for the new 2014 rMBP refurb which has roughly .2 ghz more of speed and is 100$ more than what the 2013 is priced at now. Is it really worth it?