Pro Tip: The Fox C2 bocal doubles as a super-secret upper register bocal for a majority of professional bassoons, before buying a ‘super amazing high note’ bocal, compare it against a Fox C2.
My Perspective: The Fox Bassoon C bore 2 length bocal is really that good and works well on a large majority of student bassoons. I highly recommend a Fox Bassoon C2 bocal and then scraping in the reed to pitch. If you are significantly sharp or flat using a C2, I feel it is more a matter of embouchure, air support, and reed adjustment- these corrections will intern transfer to a professional setup. The Fox C2 is so consistent, I still use a Fox C2 along with my personal bassoon bocals to assess the quality of an instrument and new bassoon reed shapes.