The transfer speed obtained by the Thunderbolt is stirring, storage capacity is impressive (I use for my part storage Raid 0), the material is silent and does not heat, finally the design blends perfectly with the Mac.
I personally am very satisfied and I have no complaints after 4 months of use, except that I would have liked an alternative USB 3.0 connection and the ability to run it on PC also.
Nevertheless, it will delight all Mac users looking sedentary storage capacity and speed of access, so it is particularly suited to photographers, editors, designers, and other graphic artists.