B&H Photo-Video offers the Western Digital 6TB My Book Studio Edition II eSATA / FireWire 800 / USB 2.0 External Hard Drive in White, model no. WDH2Q60000N, for $349 with free shipping ($0.06/GB). That’s $5 under our September mention and the least expensive 6TB quad-interface external hard drive we’ve seen. (It’s a current price low for this model by $26.) This system features two 3TB drives, capacity gauge, and RAID support. Although formatted for Macs, it can easily be reformatted for a PC.