I just switched back to Mac after too many years with a PC. I bought an iMac 24" 2.8GHz with 4GB 667MHz DDR2 SDRAM and 750GB Serial ATA Drive. I'm planning on adding an external hard drive for Time Machine to attach to my AirPort Extreme. From reading information posted on the Apple site and my AEBS I understand that it needs to be connected to the USB port on the AirPort Extreme Base Station. While I may be opening up a technological "can of worms," I'd like to know what will be the most dependable drive 1TB, USB 2.0 that I can buy. Noise and bright lights are not a consideration here. I just want a drive that I can depend on to work with Time Machine. The "original" data will be stored elsewhere. I've heard of, read about and experienced so many hard drive failures that I'm getting "gun shy" about this subject. Please feel free to let me know what's good and bad. Thanks.