Hi 'meierzwo'...sounds like we have rather similar systems/interests As I'm sure you know, there are several 'duplicated' functions that are available via the Bravo and Octavi. What I've come to realize is that given the duplicity, I seem to have developed a system flow where I use various functions of each to coordinate my 'flights system management'. For example, flying the MU-2, even though I have the option to control Vertical Speed via the Bravo, I simply press the "AP" button on the Octavi and control not only my VS (...small knob) but rather the chosen altitude I wish to climb/descent to (...large knob) and use the Bravo to control HDG, NAV and APR.
Hope all this makes sense