I understand in principle that the reason that there is variance in placement and size of fingerholes is a compromise between corrent intonation and playability, I’m curious as to which particular notes and fingerings are most affected and which holes have had the most compromises made.
I particularly see the difference in Low-D whistles. Hole sizes vary enormously, hole spacings vary a good amount. All this definitely affects my hands but I don’t have enough of a sampling of whistles to figure out which notes are the biggest problem children.
(Note to self. Must get more whistles. 
)