Other World Computing (OWC) today announced that it is now shipping a 7200RPM version of its 60GB Mercury On-The-Go portable hard drive. The new 7200RPM drives features 8MB of cache and are available with either a FireWire-only interface (US$419.97) or with both FireWire and USB interfaces ($429.99). OWC’s Mercury On-The-Go drives measure 3.5 x 5.5 x 1.0 inches and weigh 11 ounces.