schipol are very GA friendly, euro 80 for landing handling 3 nights parking. Vectored in. Superb service and well worth the visit.
I fail to see how handling GA is a waste of controllers time, we are all users and I expect the same level of service as the 737 or Airbus driver.
Almost every big airfield I have flown into have given me first class treatment. yes it is expensive but the infrastructore costs of a big airport are that much bigger.