Dear @mulveling : " most dynamic Koetsu but still sweet " , that speaks a lot of a way cartridge signature quality level performance.
Koetsu maybe is the LOMC cartridge more over-rated in history due that from its start was surrounded by on purpose manufacturer " mistery halo ". In those times audiophiles not even know where to buy it and when finally they got it they do not knew nothing of the cartridge specs not even its cartridge VTF or output level that was " mouth to mouth " the way they finally know it. The underground magasines helped to that " halo " and almost all those reviewer (tas/STHP. ) loved in the same way they loved tubes.
I began with through Japanese Stereo in CA for 600.00 that was to way expensive for its really poor quality performance. In those times in the magasines as Audio, Stereo Review or HiFi never found out a Koetsu review and certainly never listed in their Year " bibles ". Always a mistery.
With that poor performance the cartridge still sold my dozens and price till today goes up and up and up. I owned several samples and was with the RSP the very first time that the cartridge can be listen it with a little better frequency extremes but even the Blue Lace is nothing to " die for ".
For me really poor performance with a " monstrous " price tag. Not for me any more, I learned in the hard way spending money for it. Yes, exist audiophiles that can live very happy with as you and nothing wrong with that.
Regards and enjoy the MUSIC NOT DISTORTIONS,
R.