Thank you, Osocoloso! I have a box of old wired routers. I was thinking I might plug four of them into my G300N and name them Bulk, Standard, Express, and Premium (using ethernet jack level QoS to give each a priority corresponding to said names). Then maybe I could prioritize from there in a very visual way that even I could understand, ie. wire everyone up to the box with the appropriate priority (of course I'd have to turn off the wifi to keep them from cheating my simple scheme). And if this lame-brained idea of mine doesn't work so well, I'll do something reasonable like the bandwidth-by-MAC that you so kindly suggested. (Almost certainly going to end up doing what you suggest, but it wouldn't be like me to do it the reasonable way first, not if I could run several hundred feet of cable through the house instead. I like cables. Makes my house feel manly.)