The Rock had some great Northerns.  See:

http://www.rr-fallenflags.org/ri/ri-s5114bjg.jpg

I'm with you on smaller locos.  I don't  care for 4-wheel pilot or trailing trucks, but give me a nice Prairie (Do you think the boys at the Frisco were smoking dope in the old days?), Mogul or Connie and I'm happy.  Some Mikes, too, though they could get pretty large.

There weren't really all that many Prairies around.  For some reason they didn't catch on.  Maybe it was the advent of super power and the rapidly growing need for big tonnage machines.

But how do you get all of those toothpicks to stay in place so you can use them to ease the shell back on the chassis?  Mine just fall away.