An Abel whistle can cost over $600. Why would anyone pay that unless there was something better about it?
Why indeed.
A few weeks ago I attended the annual convention of the National Flute Association. There was a booth there of a maker of very expensive whistles made of Grenadilla and Silver.
I tried one. The maker asked me what I thought. I said the 2nd octave was too stiff for me. He said "Mary Bergin told me the same thing." Now, if Mary Bergin is telling you what could be improved, why not do it? I assume it's because the people who buy his whistles are probably Boehm flutists, who are looking for different things than Mary Bergin is.
This thread, and the fact that I recently got a Burke Narrow Bore Brass (which I've long wanted to get my hands on) has got me to compare a few High D Whistles I have to hand:
Feadog MK1
Generation with central mould-seam line*
Generation without central mould-seam line*
Killarney
Burke Narrow Bore Brass
Burke Session Bore Aluminum
I was most interested in seeing how the Burke Narrow Bore would compare against the other D's of similar bore. (The Burke Session Bore has a bore larger than is usual for High D Whistles.)
Volume. The Burke Session Bore is the loudest, next is the seamless Generation. In the middle are the Killarney, the Burke Narrow Bore, and the seamed Generation. The Feadog is the softest.
Lightness/sweetness/ease of response of the 2nd octave. The Killarney and lined Generation were tops, followed closely by the Feadog. The Burke Narrow Bore was in the middle. The seamless Generation and Burke Session Bore had the stiffest 2nd octave.
Timbre (low octave) This of course is subjective. To my ear the Killarney and Feadog had the richest/most complex timbre. The Generations were in the middle. The Burke Narrow Bore was next. The least complex timbre was the Burke Session Bore.
Interesting that complexity of timbre was often in inverse proportion to volume, and that the whistles with the sweetest high notes had the richest low notes. (Not loudest, the richest in complexity of timbre.)
Intonation. The Burkes were bang-on as they came. I switched out the Killarney body due to the one that came with it having a sharp bellnote. The bodies of the Generations and Feadog all required some carving to adjust the scale.
One thing to be aware of is that many Generations have a very flat 2nd octave. The seamless Generation I have is like that. The other Generation isn't. The Killarney and Burkes have perfect octaves to my way of playing.
It's easy to see why the Killarney is popular: very sweet nimble 2nd octave, good volume, nice timbre, bang-on octaves, attractive price. In many ways it plays like a really good vintage "cheapie" (which is high praise indeed). I did switch the body that came with mine for an old Generation body 1) to fix the sharp bellnote and 2) to get the C#/C natural relationship the way I like it.
* the two types