FirmTek miniSwap/U3
Bare Feats (via Paul Haddad):
The FirmTek miniSwap/U3 is the fastest USB 3.0 device we have tested to date. For that matter it’s the fastest bus powered storage device we’ve tested to date regardless of the interface type (including Thunderbolt).
It’s a relatively compact, fanless enclosure that can easily swap bare 2.5-inch drives. The price hasn’t been announced yet.