Markus, Coming from a KN7000 I started using only the registration memory, but I find using more then one method the best.
1-I have 5 sets of eight bands sounds in the registration. Piano, solo trumpet, sax section ect---only instruments. As I am playing a style I can use the four registration changes that come with the style and my bank of eight. The 5 sets of band registrations favor different types of bands --Latin Big Band All strings rock Ethnic.
2-I also have complete set-ups for special songs that the Music Finder can not handle. Call up a lyric a key change foot pedal ect.
3-The rest go into the Music Finder, its easy when using the favorites, categories and search tools.
I try to use all the features that Yamaha put in the keyboard.
Hope this gives you some new ideas, John c.