Very easy to set up, but that's where it ends. Frequent hiccups connecting to the internet, requiring reboots of router and/or modem. Slow reboot time.
I eventually got the remote PC's to connect more or less continuously, but I would hardly describe the result as superb.
However, the worst part is that it is completely hopeless for streaming videos. I use a PS3 to stream my videos wirelessly from PC to TV. I was able to establish the connection, but it would drop out after a few minutes, and the PS3 would simply find no media server at all. I played with all sorts of configurations, including the DMZ and port-forwarding to fixed DNS, but nothing worked any better than anything else.
The USB dedicated dongle BELKIN CORPORATION Wireless N1 USB Adapter
can register speeds of up to 300MBS, but this drops immediately to about 17MBS as soon as you put any kind of load on the system.