Exactly! Combinations, selected by ear; none of this is new... There is no real science behind combining one type of stylus with a cantilever, in conjunction with a certain metal for the coils, the number of turns of the coils, and/or the influence of the body, etc. Experimentation is important. This why I always look at the design of anything I buy; in the case of the A90, it was quite clear what Ortofon's goals were: a cutterhead-like stylus, lightness, stiffness, speed, accuracy, dynamics (though it could be better), pure copper, and as few resonances as possible - I am sure all within a budget (e.g. they could probably extract more performance with a pure carbon lattice cantilever, aka diamond).