I imagine that there has been a discussion of the differences between Concertina vs accordion reeds but the ways that I tried searching didn't find any. I've read lots a comments in various posts about differences but nothing comprehensive. Any links would be appreciated, and any links to sound comparisons would be especially appreciated. I am in the process of purchasing my first concertina (probably Hayden duet but possibly English). It seems that most players much prefer concertina reeds, but
I drilled a tiny hole in the centre of each 'A' button on my Hayden and glued in the cut-off head of a brass nail. This lets me feel where 'A' is and relocate my fingers when they get lost. Of course, the finger that touches an 'A' does change depending upon the key being played but that does not seem to be a big problem. I ordered some extra buttons from the Button Box just in case this did not work out, or if I ever wanted to sell the concertina.
FWIW. These button