I don't see why QoS is such an important feature for a personal router. If he is (and I assume he is) the primary user of his network, then why is QoS control necessary?
The common response is voip, but it can also be video on demand. While Netflix will notch down from HD to SD to Artifact-D as the net congests it isn't pretty. If you have multiple users and some says "Hey look the Linux Mint iso is out, lets get both the 32 bit and 64 bit version." while you are watching a movie, its very annoying for both the movie watcher and the other person who says "WTF? 18 hours to complete, no way!" This way only one of you is disappointed.
Sorry, what jxf wrote. Highly compressed video suffers from extremely obvious and distracting artifacts, about the only thing you can say nice about it is that the frame rate is high and it doesn't pause in the middle. So the neologism conveys the point where the video is unwatchable due to visual artifacts but still considered "video" by the provider.
