when "new" they are very aggressive, but when worn and after a while you can really use ANY of them , just learn ( get the feel, touch) of how hard to rub, AND more important, the direction...different areas of each gun, this direction changes....do NOT always go front to back, as they say with the grain?? ( there is NO grain, that is the polishing direction you "see"...........)
as pictured and noted above, there are many polishes as well as 'tricks" ( like the oil Walt uses)) to help subdue the make the finish "look" different....been polishing guns for refinishing, and re blue prep as well as stainless finishes, since the late 1960's....there is a "feel" and techniques......same goes for bead, sandblasting...the 'media' (glass or sand) as well as the pressures used..........