Search/Create/Modify Business Partner from ABAP

Hi,

we want to search/create/modify Business Partner data like adresses, bankconnections etc. within the SAP Business Partner module out of an ABAP programm which has the necessary information available at runtime.

We found so far a lot of FC's or BAPI's, which would work in principle.

We are woundering if there exists a better more economic way in terms of less coding, better programm maintenance, etc.

We belive it is possible doing so with classes and methods.

Has anybody a good idea, an example, a white paper a code example, an web linke how to do this ?

Any hints are appreciated. regards from Michael