Which drawing method should I use for a finite state machine in tikz?

Question

I have a finite state machine with 4 states and a few dozen arrows.

Which method should I use to draw it?

Graph Drawing section of the pgf manual

uses \graph

The Petri net example

uses \node and \edge

The above Graph Drawing section lists a few more.

Which one fits best the finite state machine drawing task?

EDIT: The Automata Drawing Library gives another method but I am not sure whether my few dozen arrows are correctly handled by it