It's no secret that a few short years ago I walked away from C instruments - after nearly five decades of playing them, and stepped into the viewed-by-professional-and academic-American-players questionable/dubious world of B-flat playing myself. Indeed, my colleagues and myself made jokes about it - when I first took the B-flat plunge - of me having "gone amateur".
To this day, central European full-time professional players (and probably most central European amateurs?...though I don't live there, so I'm admittedly supposing) seem mostly to be B flat players (the area of the world where contrabass tubas were first suggested and constructed), though - with the world getting smaller - quite a few of them (again, as I've witnessed by the internet) have purchased C instruments (retaining their B-flat instruments) to find out what the American C thing is all about.
Sure, there are some past and present B-flat instruments that suck, but way more C models suck. They always seem to have the goal in their design and playing characteristics of "being as good as B flat instruments", and - when one of them comes fairly close - it's considered to be a gem, yet (having revisited all sorts of models of C instruments quite a few times through all of my repair work), in every size range there's a resonance lacking in the best of the C instruments that the best of the B flat instruments possess. Even Gene Pokorny is often - these days - playing (what I consider to be) a (not bad, but) run of the mill B flat instrument while leaving (what I considered to be) the best of the C instruments in its case.
I don't know the complete history of the American orchestral C instrument playing thing, but I do know that quite a few of the C instruments of the past used by American orchestral players were pretty wretched... Certainly the King C instruments were wretched, though they are curiosities and rarities which collectors seek out. I remember color brochures from the very late 1960's when Bill Bell pictured (in his shockingly old age, and obvious poor health) was holding an Anton Meinl-made knockoff of the King C instrument, and that model was just a little bit of an improvement, but still has a reputation today of being a model that offered very challenging playing characteristics - as has been discussed extensively, and whereby players greatly admire a now deceased player (namely, Sam Pilafian) who - in a very high-profile brass quintet - played the same model, played it quite well, and is still admired today for his ability to play that challenging model as well as he did.
Trial and error having taught manufacturers about improved intonation characteristics with C instruments and then graduating on to computer technology overlapping with acoustical technology has resulted in more C models with less wretched intonation characteristics, but - again - there's still the issue of less resonance when there are C and B flat versions of the same model, compared back to back. It's quite reminiscent of playing a pre-war American "monster" E flat next to a similarly sized B-flat instrument, with the monster E flat tuning characteristics being wonky and the resonance being lacking, yet with the C vs. B-flat comparisons being less striking, though obviously still there.
I'm not just talking about one instrument that I own. I actually own and use a very large B flat instrument, a much more compact B flat instrument, a B flat recording bass and - usually - a B flat sousaphone. Further, just as I've placed a very controversial title at the top of this post, I've heard just as many American C players over the years (when I myself was a C player and probably was fully into the American C tuba snobbery thing as well) say to me out loud or quietly, "B flat tubas suck"...and it's REALLY easy to say "to each their own and every player chooses the instrument that suits them best", but I prefer to go a little farther, needle/irritate/provoke people just a little bit, and just say what I think - rather than retreating to the use of quibble words, quibble sentences, and quibble paragraphs.


