Although not so important for those who possess more natural musical talent than myself, the reason I chose to learn C-Griff over B-Griff is the availability for C-Griff of material (method and exercise books) from which to learn the instrument. I found many choices for C-Griff, but I was not able to find a single B-Griff method book. Still, if you know of any please recommend them here so that others who are considering playing the CBA might consider them when trying to decide between the C-Griff and B-Griff systems. The bottom line for me was, even if the B-Griff system does possess certain playing advantages, what good is it if after a reasonable search I could not find any good books that teach it?
Having said that, I wish to state my admiration for those who possess sufficient musical talent such that they are able to master the instrument without such formal progressive educational material. They seem to get by with just a diagram of note locations and a bunch of popular sheet music. Amazing! All I can say is, I envy their talent.
Essentially I followed the advice given by the now closed Roxy's Music Store in the following video which remains active on YouTube even after the store has formally closed:
Piano Accordionist Learns Chromatic
The Manu Maugain method book recommended in the above video uses in part the proven successful pedagogical approach of presenting the student with a progressive series of unmelodic practice exercises over various ranges of notes and key signatures, exercises that by their unmelodic nature require active reading, thus helping to build both motor memory as well as sight reading skills. When I studied music at the college level where I was formally taught piano, I was assigned Bela Bartok's Mikrokosmos. Also recommended for the same purpose were Czerny's Opus 823 and 599. These are well known and recommended practice exercise books in the piano community that have remained popular over the years at many music conservatories. In my experience Manu Maugain is the only CBA method book that does a good job with this pedagogical approach, and for that reason I am finding it most valuable in learning the chromatic button accordion on my own as a hobby. Of course the Maugain book does contain in addition to fingering exercises many musical practice pieces as well. It wouldn't be much of a method book if it didn't. Also, as recommended by Roxy's Music Store, I am using various Palmer-Hughes lesson, prepratory, and recital books to expand my musical practice repertoire.
On the other hand, many people, especially those learning on their own, detest formal fingering exercises such as are in the Maugain book (as well as the piano books that I mentioned earlier), claiming that they are too tedious and boring. These people prefer instead to focus exclusively on familiar popular songs. In other words, real music. Of course my goal in the end is to play real music. All I can say is, for me to progress I need such formal progressive material to develop sufficient skill in order to play real music. And as I said earlier, if you can learn any musical instrument without doing this, I envy you for your superior natural musical talent.
Also recommended in my college music program was the making of recordings of each practice piece to inspire proper mastery. I am doing this in the following YouTube channel:
My YouTube Channel
My videos are a tool by which I can prove to myself that I am successfully mastering each practice exercise before moving on to the next. It's like playing in front of a teacher. You always play your best in front of your teacher, don't you? On YouTube, because I never know who may be watching, I always try to play my best.
Yes, what I am doing is a lot of work. But the bottom line is, without working in such a manner with formal progressive material, I am not able to learn any musical instrument, piano, guitar, flute, or violin. I need professional advice on how to progressively proceed. I simply do not possess sufficient musical talent to learn to play using just a diagram of the note locations and a bunch of sheet music. Besides, as my YouTube channel demonstrates, I do occasionally make practice work more fun by playing in novel ways, such as with backing tracks, or by playing both parts of a duet.
So, for me, the choice between C-Griff and B-Griff was simply a matter of the availability of material from which to learn to play.
I hope that others who are considering playing the CBA will find my experience helpful both in choosing between C-Griff and B-Griff, as well as in choosing a strategy for learning the instrument.