I have a week so far with the "Mantis" and still keeps me awake and re-listening my LP collection. I read a review somewhere stating that this is an "honest sounding" cartridge - and I fully agree.
It has all the tonal palettes correct, great dynamics and excellent resolution of both inner details and full scale re-creation.
I don't mind if this is an MC or an MM cartridge, just as when a good Tube or SS amp is in the chain - one forgets the design principle since the system gets me back to the music, to the performance and to the artistic event.
Regards,
Fernando