What is the best external hard drive for a iMac computer? I want a brand that has good reputation for quality, good support, good software, etc. Also how much space should I get for a iPhoto Library (14,000 photos) and iTunes library, and miscellaneous documents? I see there are good deals on the 1 terabyte models. My one friend told me that Western Digital makes the best and then another friend said Iomega. Please help. Make sure you specify the model if you leave a suggestion. Does anyone know if the Western Digital external hard drives still are loud and make the humming noise? Thanks...