My Current setup is a 5th Gen Airport Extreme and a couple of Airport expresses around the house. Ive been starting to have some issues with the airport such as slow downs and random restarts. I saw online that the refurb store has the 6th Gen Airport for $129. While its not entirely necessary for me to upgrade the price is so low and AC is still very current and AD isn't going to be out for a while. I also am looking to centralize my Time Machine backups and the 2TB TC is $179 which isn't that bad. If I do end up upgrading I don't know which device to buy. I have a 3TB external that not really being used so I could just end up plugging that into a new Airport and have TM work or I could just get the TC and streamline the setup. I have a considerable amount of AC devices in the house and the connection coming into the home is a FiOS 150/150 fiber connection, so I think the upgrade to AC would be worth the cost.