411A I do not agree. Amsterdam (Schipol) ATC are not the best in my experience.
Often snotty, short tempered and argumentative, and frequently lacking any understanding of the capabilities of the aircraft they are controlling. For instance...being vectored at 90deg angle toward the NDB RW19R (ILS off the air), then 1nm from overhead the beacon being told 'you are cleared NDB approach 19R contact tower....' What kind of rubbish is that?
I've never found LHR controllers to be anything less than excellent. LATCC likewise.
Maastricht are usually good...but then they have a lot of Irish guys keeping the dutch heads on straight.