recommendable sampler compilation but could be better for my taste

The two CD contain many well-known and lesser-known titles in Kölschem dialect. Unfortunately, however, missing a lot of titles which are still far from known (eg several titles of Höhner like "The caravan .." etc., several titles of "Bläck Föös").
You could either create a third CD, or it can omit some Ballermann hits.
But overall, the compilation is worth listening to.