Hi, I'm very tempted by the new Airs but the price increase from the 128gb to 256gb does seem a lot. I'm currently using a White 2007 MacBook, so I'm sure that any upgrade would result in a noticeable boost. My only concern is the amount of storage on the Airs. At the moment I'm using 209gb of my 500gb hard drive, but this is holding all of my iTunes library, which looking at the iTunes folder is currently 112gb (≅68gb Music). If this wasn't there then I'm looking at 97gb, so the 128gb drive would be fine. I know that my music is in iCloud, but I like to have a local copy too. How do current Airs perform with memory sticks and SD cards. Would for example storing my music on a 64gb SD card show much noticeable impact? Equally the same could apply for other big libraries such as iPhoto or iMovies. I'm fine having these off my machine when they aren't being used, e.g.: I split my iPhoto yearly so I've only got the latest on my machine anyway. I'd hate to buy under spec and regret it, but equally I don't want to spend the extra £250+ when I could get this extra storage space cheaper with SD cards or memory sticks. Any advice from current Air users or people who've tried this approach would be really helpful in my decision making. Thanks.