Do you guys have any suggestions on an external hard drive? I don't want to spend the money on an overpriced time capsule. I already have a Wireless-N Router so no need for the capsule. I'm looking for a good hard drive. I've read reviews on the WD My Book, and the Seagate's, but both devices have mixed reviews using them on the iMac. Any suggestions? My brother has used both the WD My Book's and the Seagate's and they both died on him. Thanks for the suggestions!!!