I'm interested in getting either the Time Capsule or AirPort extreme to first, allow me to print and backup wirelessly from my MacBook that I'm using for school, and second to replace my old linksys router. I also like the idea of being able to use the TC to backup my MB and iMac. I imagine I can get the same thing done with the AirPort extreme with an attached external hard drive, I currently have a 500GB drive connected to the iMac that is full. So my question is which is the better option? The all-in-one TC, or the AirPort Extreme with the external backup? Price seems to be pretty similar for both options, but the reviews of the TC on apple's site are making me concerned about the reliability of the TC as a server and backup.