I have a Stagi Hayden for sale in the UK. <
https://www.concertina.net/forums/index.php?/topic/25075-stagi-ha yden-duet-46-button-for-sale-in-the-uk/#comment-220743>
Looks like you're in the US, though.
I didn't find the 'slope' of the buttons made much difference when
I got a Peacock, if that's what you mean.
(Note my sig if you want to email me.)
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