Looking to buy a 27" imac either new 2012 model but alittle expensive. found on cl found a excellent late 2009 27" iMac Late 2009 2.66Ghz i5 Quad Core 12GB Ram 1TB HD asking $900obo. Last on frys electronics a 2011 27" imac 2.7GHz quad core Intel Core i5 processor,4GB SDRAM,1TB Hard Drive, AMD Radeon HD 6770M 512MB*for $1000. What do you think I should buy? Pros and cons Trying to keep budget at $1200 at the most.