I am only a makee learnee beginner but I bought Shaw's C & D plus their low D and they play really well. The go into the upper register very nicely. I like their breathy sound.

I bought mine direct from Shaw's as they knock off the VAT and their postage charges to China were very reasonable. They arrive unbent as they were well packed.

A guy played last night at the Blarney Stone in Shanghai and he had about 6 of the Shaw whistles which he had bought several years ago. Well used and abused at he once sat on them but managed to straighten them out and they still play well. The low F he had sounded beautiful.