I have a weird problem so do bear with me. A few months back I bought an Airport Extreme. I had never really given backing up of OSX much thought prior to that but after a few months of buying the Extreme, post my purchase, I started to have the classic buyer's regret. I felt like I shouldve bought a Time Capsule. I made a temporary solution by adding a 1TB spare external HDD via the USB 2.0 port of the Airport Extreme. In this current scenario, where I dont want to buy a Time Capsule, can I be recommended a LAN/Gigabit enabled time machine compatible HDD? Thanks.