Looking for feedback on advanced shakuhachi Yuu

Hi,

I've owned a regular shakuhachi Yuu for about 10 years, that I bought when I started learning shakuhachi. Over the past years, I've had a rather hectic life between family and work duties, and stopped taking lessons due to lack of time. Still I kept practicing on my own, and the Yuu has been my go to instrument, that I could bring carelessly in my backpack anywhere, and take it out whenever I could find a little time and a quiet place to play.

This fall I'm finally going back to taking lessons. I am considering to get the advanced Yuu. I remember trying it at a workshop some years ago and being rather impressed with it. Still it's a long time ago, so I'd like to get some feedback from owners, and more specifically from owners who played the regular Yuu before.

Kind regards from France!