Have you heard the Kondo. I recently heard it in an unfamiliar system with the Kondo Copper SUT and it sounded good to my ears with the IO-M. But to really take anything from that demo when every component is different from what I own and know would not be helpful in trying to determine what is going on.
I know different SUT's can have a dramatic effect on the sound. I have friend with the Allnic and he bypasses the internal SUT for a Expressive Tech SU-1. The end result is a much more dynamic presentation, very noticeable.
If I would further investigate the Kondo it would with their silver SUT or one of the others I have in my collection with perhaps a different cart other than the IO-M