Dear icorem: IMHO the Colibri is a very good performer and has nothing to envy to other top cartridges as the ZYX.
Why you are not satisfied with? did you returned to VdH after around 300 hours of play to fine tunning it? which are the frequency range or performance areas where you think is not up to your priorities against the ZYX?
In the other side the sampsa55 advice is a good one and you can test the Colibri in your other tonearm with different headshells.
I owned and own at least 4 diferent Colibri's over the time, no it's not a perfect cartridge but no one is. As everything in audio always exist trade-offs.
Regards and enjoy the music,
R.
Why you are not satisfied with? did you returned to VdH after around 300 hours of play to fine tunning it? which are the frequency range or performance areas where you think is not up to your priorities against the ZYX?
In the other side the sampsa55 advice is a good one and you can test the Colibri in your other tonearm with different headshells.
I owned and own at least 4 diferent Colibri's over the time, no it's not a perfect cartridge but no one is. As everything in audio always exist trade-offs.
Regards and enjoy the music,
R.