I currently have a 5th Gen AEB and a readyNAS duo with 2TB of storage. I use the readynas to backup 3 macs, all running Lion. It generally works OK, but is a pain to fix if it stops backing up or entering time machine etc. Therefore i don't 100% trust it to restore my computer should the worst happen. Would people recommend i return the AEB (I've only had it 1 week) to the apple store in exchange for a time capsule? How robust is the backup and restore via ethernet with the Time Capsule? Is it USB level of reliability of closer to that of 3rd part NASs?