Other World Computing announced today the highest capacity 7200RPM portable bus-powered storage solution on the market - the Mercury On-The-Go 320GB 7200RPM portable storage drive.

Immediately available and priced starting at $239.99, the new Mercury On-The-Go 320GB 7200RPM drive has models available with USB 2.0, USB 2.0+eSATA, FireWire 400+USB 2.0, and FireWire 800/400+USB 2.0 Interfaces.
These portable drive solutions are built with the latest Hitachi 7K320 drives.
In addition to the 320GB 7200RPM drive, OWC also offers additional 7200RPM models with capacities of 100GB to 200GB, priced from $109.99; and 5400RPM Models from 60GB to 500GB, priced from $74.99.
More details on the OWC site.