Major advantage (besides price) in my eyes is the flexibility regarding triggering.
I wanted it as a replacement for my Silent-Hektik and thus keep triggering mechanism and (inductive) pickup.
Sent them a picture of the 5 wing rotor and they made a special configuration file for me.
Worked right out of the box.
The Ignitech is used quite often here for beemers, a guy started the whole affair ~2 years ago by adapting it to his bike and documenting each step in the 2-ventiler forum.
In the meantime he's got the Ignitech Injection running in his two beemers.
Completely legal (TUEV) which is quite an affair in Germany.
I don't have the ignition running in the bike yet, but built a primitive test stand to run it up to 4000 rpm and check advance curve and all other parameters with the stroboscope light.
Looks very good up to now, the ignition does exactly what I had programmed.
Good message for PJ: it automatically detects needed dwell time of the coils (checked that with a Honda Fireblade coil and a BMW 4V coil) and triggers coil accordingly.
Ignitech does not provide a special mounting kit for the BMW alternator, but this guy here sells them: