First I want you to understand that YOUR experience of playing a Super VI might not be the same as mine, so I will start out with a very straight forward comment, please do not be offeneded.
NO ONE else's comments or opinions matter. If you are interested at this level, YOU need to play one yourself and make your own choices. On top of the fact that even 1 super VI can be vastly different from another, one really excellent and the other very mediocre, this is not a "is a Super VI better than X-Y-Z?", it is a "how does THIS EXACT Super VI compare to THIS EXACT other model to me when I play both?".
Also, you need to ask yourself are you a good enough player to even hear or feel the differences. You see, once you get past a certain level, accordions start to be less about the experience what others in front of you hear and more about what you FEEL.
They are nice to play. On a 60's version that was expertly maintained by an expert, the experience is nice, the sound excellent, but in my personal OPINION, no better in sound quality than a top of the line Brandoni, Serenellini, Dallapè, etc... the sound varies greatly between models but the differences in what they made me feel are minor.
Remember, not everyone wants a Caddilac, some want a Rolls Royce, some want a bus, others want a station wagon. You need to ask yourself what do YOU need.
Yes, there are some sonic qualities that lower models like an SS20 won't be able to match... MAYBE, if you can hear and feel them yourself.
Yes. My personal choice was a Hohner Gola 459 (even though I could have had 2 or 3 Super IV for the price of my Gola) and I travelled from Quebec Canada to Amsterdam Netherlands to pick up my Gola. I can openly and with prejudice (lol) say that I am a huge fan of the Gola. I was supposed to have one has a younger man, I heard them played around me for all the years I was studying in the Conservatory, I've played on Gola many times through out my life, from a time where it sounded no better to me than my Hohner Morino VI N, to the time I could start comparing back to back various Gola and appreciate the subtle differences. Some were ordinary, some were amazing and one places a smile on my face just looking at it from 12 feet away, much less the great pleasure I feel when just playing anything on it.
For me:
- a Gola was the ONLY accordion that I played that raised the hairs on my arms when I played it
- a Gola was the ONLY accordion that came in a 45 key extended keyboard, 5/5 reed configuration with a 185 bass MIII Free Bass layout of the highest quality I have ever heard.
- TO ME, in MY opinion, there is no better sounding accordion, and I have had the chance to play many top of the line accordions from many manufacturers, Scandalli, Siwa-Figli, Titano, Dallapè, Serenellini, and many others. Some come close, none reacher higher.
But I repeat... this is me and my opinion. I've waited many decades and did my homework for the pleasure of owning my Gola. I would expect that if someone is serious about such a high level instrument (ANY instrument, that they can truluy cherish and play with complete pleasure), that they do their own homework and never just depend on the opinions of others.
Just like you should never buy a car without driving it, you should never even consider the purchase of an accordion you never played.