We've seen couple of really good custom FXPs imitating that very clean (I'd call it "clinical but not abrasive") Yamaha sound. I appreciate that the YC5 is apparently modelled after a Yamaha C5, but for me, I was never able to make it sound like a CFX (Yamaha's concert flagship).

There are a few people on this forum with much better parameter design skills than me, so I was wondering if we wanted to have another stab at creating a CFX FXP now that we have all the v9 model improvements in our hands?

For starters, here is a useful youtube video showing off the Garritan CFX: https://www.youtube.com/watch?v=afDnJzzZlnc

And here is a comparison performance contrasting the CFX with a Bosi and an NY D: https://youtu.be/T2GYYV8JSqM

I've not gotten very far with my own efforts, but maybe you can push a bit further than me?