SSDs are perfect for mobility as they can be larger than USB drives and with a good controller they can saturate the USB 3.0 or eSATA bus which is good news for those filming or taking pictures on a trip.  The SSD Review has been using the Angelbird SSD2Go USB 3.0 External SSD for a long time now and it has survived quite a few trips.  The speed is also impressive, ATTO reports 533MB/s on eSATA and over 400MB/s using USB 3.0.  It also comes in snazzy colours.

"As a bit of a personal example, we reviewed the Angelbird SSD2Go USB 3.0 External SSD last June and that SSD has since been around the world and back, and then some. Wherever my camera equipment goes, it goes."

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