"Excellent Drive"5.0 starson by Mason Staples
Pros: Time Machine compatible, aluminum heat sink design, easy RAID configuration, reliable, Thunderbolt interface
Cons: slightly heavy
Summary: This unit has many excellent features, but the Thunderbolt interface is obviously the main one. It's crazy fast! And, the drive can be daisy-chained with other Thunderbolt drives, which further increases the speed (I haven't tested that yet). The casing is solid metal and there are two HDDs inside, which makes the unit quite heavy, but also pretty much fail-safe as it can be setup in RAID1.