To ensure good RF signal quality I use the following amplified splitter at the network head end. I feed two output to rooms in the house and allow my two HDHomeRun unit (four tuners total) to connect to the other two outputs.
http://www.amazon.com/gp/product/B00...ef=oss_product
They also make a 8 port splitter too!
Another important limitation of the HDHomeRun is just try connecting it directly to an Ethernet port on your computer. Windows 7 squawks to no end and won't let you create a very simple private network. The firewall prevents HDHomeRun from "getting through" to the computer. Then you are forced to make this simple network into a public one in Windows. Then Windows 7 security complains to no end. Danger!!! Warning Will Robinson! Sheer stupidity, I wish I could bit**-slap someone at Microsoft.

So HDHomeRun falls-on-its sword when you attempt to dedicate it to a single PC (when connected directly to a second Ethernet port). In fact the is how i was forced to buy the AVerMedia Duet even though the reviews have been far less positive than the HdHomeRun.
This now well documented case offers reasons and logic which suggest that the vast majority of consumers are unable to determine the actual situation (because its too complicated and can change overnight). It is true that HDHome run is a great product, and AVerMedia Duet may have been buggy at first.
Same goes for my $350 Samsung 700 receiver, a fantastic amplifier with sound quality better than any other receiver, yet the initial bad reviews have postponed its success. A firmware upgrade fixed the issues. Or that the 2009 Oppo 83 are better than the 2010 Samsungs at 40% of its price. This is why I post much less, as the actual situation changes to become opposite from what people still think. Outdated perceptions and misguided brand loyalty prevent consumers from enjoying superior products are reduced prices... Go figure!