Literally shaped like a fat tome, the new MyBook series of drive draws its design cues from "in-depth consumer research". These same consumers also must have told WD engineers that they want plug-and-play capability (no CDs required for install, check), easy-to-use file maintenance software and capacity indicators (also check), and finally, a heat dissipation system disguised as book page ends (checkmate). Drives that the whole family can agree on are available immediately, and range from $150 for the 160GB Essentials edition (USB 2.0) to $329 for the 500GB Premium version (Firewire 400).