I just bought an iMac (hurray) and am looking around for a good external hard drive to protect important files. A quick search led me to this article: http://www.pcmag.com/article2/0,2817,2400314,00.asp (The Best External Hard Drives for Macs) published last month. The Editors' Choice went to this product: http://www.amazon.com/LaCie-Rugged-...=2025&creative=165953&creativeASIN=B00A3G461K (LaCie Rugged USB 3.0 Thunderbolt Series 120GB Solid State Drive). For $200, that isn't much space. Speed is not at the top of my list; dependability is. So if you have a specific recommendation, I'd appreciate hearing from you. Thanks.