Hello all so I am going to be buying a new 27" iMac soon and wanted to make sure I'm buying the best one for the money, so I've narrowed it down to either the base model or the next model up, I'd be upgrading to 256gb SSD drive and would add ram at a later time. My use case is basically web browsing, light photo editing, watching movies/videos and very lite gaming, I have a gaming PC for 99% of the games I play. Would I really need the 575x radeon GPU and the slight bump in specs? Now the only thing that I'm questioning because I keep hearing two stories is on apple's site it says the base model only goes up to 32gb max, the next model 64gb max, but other sites it says 128gb on all the 27" models, so which is it? Thank you for your time.