I have had the Superhub installed now for 24 hours on a 30MB upgrade.
I am not technically qualified enough to give a technical report. Suffice it to say that without changing any settings and simply using the default settings as it came out of the box I have given it a robust testing. I have several PCs, two laptops, an iMac, Apple TV, iPad, iPhone, Wireless printer, a Wii and two internet radios.
It has not disappointed. Constant top figures using Speedtest.net. Excellent coverage all over the house for wireless. The streaming of HD video was superb.
So far I am a happy chap!