Do keep in mind that the book you are using is self-published by non-Irish player with no professional recordings or reputation, three different caveats right there.
I would go with Mary Bergin, the most renowned tin whistle player alive today, born and bred in Ireland.
Hi squid, an unexpected resurfacing.
A quick search will tell you Stephen Ducke is from Co Rosommon but I would agree he is an otherwise unknown quantity. But I'd caution against dismissing or lionising anyone because of where they were born. It's going out on thin ice. Ireland is not free of poor players. And some half decent players have come from elsewhere: surely you wouldn't, for example, dismiss the late Bill Ochs' work out of hand just because he was from New York? Or shun Bro Steve's insights?