Hear, hear, Tunbrough. Delrins and pvc flutes seem to be Overlooked just because they’re cheaper and dismissed as “plastic”. I don’t think the next generations of flute players will have that prejudice. Tipple’ s are grossly underpriced for their outstanding excellence for instance. I was familiar with senior marketing and if I had my way we’d see Doug a rich man with a two year waiting list for his highly priced crafted gems.
Hamilton practice: got one, love it, great embouchure.
DIY pvc: made a couple hundred with student groups. Very satisfying, especially the part where you Bork one up and blithely start another, cause they’re cheeeeeep. F flutes are grand for kids.
Tipple: never had a real one, but I followed his old plans once and had a nice tooter with decent intonation and hole spacing. I played a real one briefly, and the workmanship was ridiculously good for the price.
Dixon: tried one, and I prefer my homemade.
Edit: My actual current travel flute is a Cochran 3 piece in a Pelican case. The case now looks like poo, but the flute is lovely. Not the kind of thing being discussed, but I just wanted to give a shoutout to JonC.