B&H Photo-Video offers the Western Digital 4TB My Book Studio Edition II eSATA / FireWire 800 / USB 2.0 External Hard Drive, model no. WDH2Q40000N, for $249 with free shipping ($0.06/GB). That's $20 under our February mention and the best price we've seen for this HDD. (It's a current low by $7, although many retailers charge close to $300.) This system features two 2TB drives, capacity gauge, and RAID/JBOD support. Although formatted for Macs, it can easily be reformatted for a PC.