Heh, Wendell Diller at Magenpan would disagree. The way he puts it is that running the speakers with no resistor is like running a speaker with a tweeter level control turned all the way up.
It's really going to depend on the acoustics of your room, of course -- if you have a dead room, you'll want to run without a resistor. The smaller resistor would be for an average room and the larger one for a live one. The only "right" here is what sounds right in your room.