I'm split. I have a 2011 Air that I rarely use. The 4MB of RAM and slower CPU is the major problem with it; screen resolution is a distant third. I keep thinking of buying the most modern USB-A-and-SD-card-reader-equipped AirI can find, because it truly is the best machine I've owned. On the other hand, new and shiny! And I almost never use the SD card reader or USB port, it's just nice to have. And the keyboard is fantastic.