Hi Guys, For my next MacBook, I'm unsure of what to buy. A Pro, or an Air? Could anyone give me some details on the benefits of both? What I don't understand is the flash memory on the Air? Is this quicker? Will it last as long? I've currently had this MacBook Pro for a little while now, with a few big pieces of software that I've bought.. I can really really sense it slowing down. Should I get an 8Gb MBP next time? or would the Air be better?