The advantage of this knife block in this case is the flexible plastic cords, no fixed openings for individual knives but any plugging of various diameter sizes. So I can also my cleaver or bread knife accommodate to be firmly fixed to a size no.
Can the WMF knife block only highly recommend, it has become very useful to me in everyday life and I do not want him to miss also.
Addendum on 05/06/2012
After almost two years now I have to downgrade my rating!
in daily use some of the plastic cords have worn or broken, they stand out everything.
While this affects the behavior of the knife but is not ugly and a fragile of plastic are due.
Despite all that I would acquire the knife block again!