I am pleased with my new Airport Extreme which I recently installed to replace an unreliable old Airport Express. Since I installed it, it has remained up and broadcasting (and accessible) without any problems.
My old Airport Express, configured for legacy 802.11g devices, would often “disappear” from the network and even though it was still broadcasting, the Airport Express wouldn’t accept connections, nor could it be found via the Airport Admin Utility. As a result my 802.11g devices (such as the iPhone) wouldn’t be able to connect to the network and wouldn’t be able to stream video or download stuff. My main challenge was with my wireless Canon printer which was 802.11g and not been able to print was very annoying. It got to the point where the Airport Express was failing on a daily basis and needed to be unplugged and plugged back in again.
I did consider replacing the Airport Express with the new 802.11n Airport Express, but having had two Expresses go on me, I decided to stump the extra cash and get an Airport Extreme. I had a few reasons, the main was that if my existing Airport Extreme failed I had a replacement on hand. It comes with three ethernet ports and I can then have a few more wired gigabit ethernet devices on the network which is of course much faster than wireless and means more stable Skype and video streaming on more devices, as well as faster file transfers. I can also add a USB hard drive as network storage too.
I didn’t get a Time Capsule as they seemed to add very little to the equation, cost more money and have in my mind more things to go wrong.
So, so far I am pleased with the Extreme and it is doing what I need it to do.