Other World Computing today expanded the lineup of its portable Mercury On-The-Go 2.5-inch FireWire drives, to include new 20 and 40GB models running at 5400RPMs, and a 60GB model running at 4200RPMs. OWC also lowered prices on its On-The-Go drives by as much as 30 percent. The drives are available in 20, 30, 40 and 60GB sizes and speeds of 4200 or 5400RPMs. Prices range from US$175.97 to $439.97.