Hi,
Just joined concertina.net - though I'm not completely new to the concertina. After having owned 2 Lachenal anglo concertinas, one metal-ended and one mahogany-ended, some 20 years ago, I abandoned the concertina and focussed on the button accordion. But recently, just for fun (Christmas gift to myself), I bought a New Swan anglo from McNeela. And I must say, I enjoy it very much - and am making good progress building a repertoire.
In my opinion, the New Swan is a great concertina for the money. It looks quite decent, sounds good enough and response is quite fast too. The only thing I like less about it is that the buttons are relatively thinnish. Slightly thicker would have felt better to my fingers.
And, following up on the previous post, I have no issue with the air valve. Easy to reach, and lets in plenty of air too.
Best,
Han.