New authors seeking representation wonder whether or not they should approach this task by sending out queries to a large number of agents all at once, or waiting for a response before querying the next  potential agent. And if you're going to query a group should you go with your  favorite agent(s) first, followed by the second and third level agents? Or does  it make more sense to
approach them in reverse order, starting with your least  favorite, (but perhaps more available) agents first then move up the scale?