The edge extrusion method is my perfered method for modeling characters as well. I used to use the box modeling method and the nurbs method but personally, I can get much better, more accurate results using the edge extrusion method. I havn't decided what my preference is for the body though as both methods usually give me the same results. I'm guessing it's probaby different though from person to person. Some might find box modeling or nurbs modeling easier.
Don't be satisfied with what you can do but rather strive to do the things you can't do!