I have run my own experiments comparing inductive to boosted inductive then to CDI based, as per a good Mazda test I found more power, lower EGT, leaner AFR (all indicating better more complete burn), on CDI than any version of inductive all other variables held constant. There is also a nice increase in RPM, again most cant test this on road/track.
Most who trash CDI or dismiss it have never run proper tests to back their views.
The best set up is COP, and CDI on all plugs, and wasted spark on leading 