Mr.Gumby wrote:
Like the previous poster I think at this point it is perhaps important you decide what you want from a whistle, the whistles in the OP are wildly different ones. Between, say, a Killarney and a Goldie there's a world of difference and each is fine in its own right and they have their own uses but they're hardly interchangeable choices. Decide what you want to play, what sort of style, type of music and all that, pick an instrument to suit that rather than chase the elusive but completely non specific 'something better'.
I think this is an important point. For some, the feel and sound of a Generation makes it THE whistle for them. Others find the same satisfaction in Burkes, Dixons, custom built wooden ones, etc. I've taken a liking to my Killarney D, which is the only whistle I really play much at all (I have some Generations in the usual keys for backing singers now and again).
Some people never find that one and keep looking. Others just stick with what they have. It's not a question of "better" or "worse" for the most part, it's "different." I'll note that I've seen plenty of quite frankly godawful players at sessions tootling away on Burkes, Sindts, et al. And plenty of great players on those same instruments. So I don't think there's any kind of satisfactory answer other than "find what you like and stick with it."