I use it for over 7 years.
The one I play is in D3.
This is my favorite!
It is what I know best in traditional Tinwhistle
that is constructed from a metal tube.
It's particularity is to have a small room cedar at the mouth
to create the channel, which gives it a pleasant smell and a unique character
for the eyes but also to the lips!
It is right, gives a rich timbre to harmonics and warm.
The range is that "we wait for a whistle-two full octaves, and without force!
The sound remains full until the treble.
It is a beautiful aspect.
It is a bit more expensive than average but worth its price.
I would put 9 because I know there are better, but that is another price and manufacturing of wood craftsmanship.