well, the only one i had a look was kenibreed
here is their
full catalog
they have :
".........
Musa acuminata
Musa balbisiana atia black
Musa balbisiana
Musa balbisiana “gigantia”
Musa balbisiana cv sikkimensis............."
i ordered once at ,
Exotischezaden.nl
i think they have balbisiana & acuminata.