I currently have a Mid-2012 Macbook Pro. Processor: 2.5 GHz Intel Core i5 Memory: 4 GB Storage: 500 GB SATA Disk (I've currently only used about 170 GB) Now, I'm looking to buy a Macbook Air because its lighter and I'll be carrying it to and from university. My question is, would it be smarter for me to upgrade from the 256GB PCle-based flash storage to the 512GB for the $360 that Apple charges, or should I stick with the 256GB? Also, if I get the 11-inch, it only comes with 4GB RAM, what difference does it make whether I have 4GB or 8GB? I do currently feel like my laptop is a tad slow, but I could also just be super impatient and have way too many tabs open at once (I also know nothing about laptops and don't know if memory even really effects speed a ton). Its $120 to upgrade to 8GB for the 11-inch, is it worth it? In addition, is the 1.6 GHz dual-core Intel core i5 processor sufficient or should I spend the $170 to get the 2.2 GHz dual-core Intel core i7 processor? I mostly use the laptop for the internet (research, social media, email, whatever), word-processing, and listening to music via iTunes or spotify. I've got a pretty large iTunes library and photo library and occasionally edit photos. Based on this, and in comparison to my current laptop, what do you guys think I should do?