Muramite rune farming- yep it's a graind, like you knew it would be. Here's how I've had some success.
Go to Dranik's and walk the North wall to Grand Historian Whatshisname. Get an expidition: Murkgliders Hive. Take this one because it has two Named's (with phs, of course) and farm the heck out of it.
One ph is a Hideous Rat, and his Named is "Who cares, just kill it". A bit further down the maze is another ph, Tatterwinged Bat, and his Named is a Frenetic Cavebat, or something. Kill the place holders, and bounce back and forth between the two spawn points. If you clear the maze between, the exp is reasonable.
You can just ITU down to the spawns, and spend a day hoping for Nameds. At least it's not a silly race with other groups, since its an instanced zone.
Bring along a six pack of coke, the phone number of your favorite pizza delivery, and unplug the phone, because you're going to be there a while. But the drops are frequent and the pace is pleasurable. A friendly group makes for a pleasant afternoon.
Happy Hunting.

