I'm now using 5 of these on my home network and with computers and other Network devices in virtually every room in the house it realy does make extending the network a breeze and so much less hassle than WiFi. I've even got 2 plugged into short extension leads and I have no noticeable reduction in performance.
Encrypting the data passed between each device is also a simple task.
The only thing I would suggest is that you consider using the version with the pass through power supply, otherwise you lose the use of the power outlet the adaptor is plugged into.
All in all a great and simple to use device.