Sue,

That is plenty of whistles. The only ones you are missing are Eb(not used very often... but I have taken great fun in pulling one out when a guitarist has stuck a capo on with the words "Ha ha none of you will be able to join in we're in Eb..... voila...).

susato make a low A which is an easy stretch, but as I said before I don't like the mouthpiece.

I love my generation Bb. Beautiful mellow sound.

slainte

alison