Scale G Major on a D whistle?

[benhall.1]

All things being equal, I generally prefer playing a Major key based on the 4th rather than the bellnote, ...

That's interesting. Out of everyone on this site, I'd suppose that you, playing as you do in recording sessions, etc., must be most conscious of the clarity and pitch of your sound. In my experience, the flat seventh produces a darker scale, but you say you prefer it. This isn't an attack - as the romans said, taste isn't debatable - but I'd like to understand the basis of your judgements. Can you elaborate?

I didn't take it that Richard meant playing tunes in a scale with a flattened seventh; I took it that he meant playing tunes in, for instance, G on a D whistle or D on an A whistle. And, in that respect, I think most people would agree with him. They're easier, for some reason, for a start.

[pancelticpiper]

it doesn't follow it always is or is always the preferred way

To be clear the word "always" didn't occur in my post.