Hi First post on here as not currently a Mac owner, as the family PC is dying I'm about to move into the mysterious world of Apple! Narrowed my choice down to the entry model 15" Retina MBP, main use out of the ordinary will be (amateur) photo editing & a bit of MS Office, browsing, music streaming etc. My local official reseller is offloading their stock of the recently outdated "2013" models, for a discount of £300 ($500) and they've reserved one for me. Before I go to pick it up, I'm wondering if I'm making a mistake and whether I should go for the new model - essentially for the 16Gb RAM over the 8Gb (as everything else is essentially the same). £300 seems a lot for memory but it could be a false economy without an option to upgrade. The salesperson assures me 8Gb is ample but reading around I see people who noticed a considerable slow down on 4Gb machines when Mavericks came out so I don't want to end up regretting it as soon as Yosemite (or whatever's next) comes out. Thoughts & opinions welcome . . . thanks!