In use, either option is the same. Time Machine works equally well with with setup. Logistically the Time Capsule is easier as the router and backup drive are in a single enclosure - less cables and power supplies to deal with. The Time Capsule option uses a server-grade hard drive. Most people looking to buy a drive to add to an Airport Extreme are usually going to go with the cheapest option. Paul Tucknott Mostly Digital On 2011-10-30, at 9:01 PM, Terry Genereaux <terrygenereaux@xxxxxxxxxx> wrote: > Hi > > What is better a AEBS with an external 1TB HD or a Time Capsule 1TB , for > reliability, ease of use and above all Backup ….. > > Thank You > > Terry Genereaux > terrygenereaux@xxxxxxxxxx > > Macbook Pro OS 10.7.2 ~ 2.4g ~ 500g HD ~ >