I have a Macbook Air 13'' with a 128GB SSD. I need to save up some memory for the daily works. I realize that moving the iTunes Library (~/Music/iTunes) to an external drive would be a nice way to save up more or less 20 GB... I was thinking about buying a micro SD card/SD card. This one has to be really stable and with good performance. Any ideas? A size of 32GB could work for me! Thanks! ps: if I buy a micro sd card I'll need also an adapter. It would be cool if there's anyone for macbook air (so with the right size that fits perfectly with the macbook) Thanks!