I notice the price difference between the Late 2013 Retina 2.4 GHz and 2.6 GHz being $300... One is the 256gb PCIe storage and the other is 500gb... I'm not concerned with HD space at all, so my question is really in regards to the 2.4 vs 2.6 i5 processors... is there a noticeable difference? For what it's worth, I really only use my laptop for surfing web, chatting, streaming videos, occasionally downloading music/videos... nothing too heavy. That being said, I do prefer to have the 8gb ram. Thanks!