I went down via France, and back via the above countries, great fun, just watch for pot holes on Belgian roads, they seemed worse than here!
Just happened to be passing.
I think that's the way I would go next time.As we are in Newcastle it makes sense to take the ferry to Amsterdam and start from there - saves the Chunnel and northern France and means more autobahn.....
It has to be done doesn't it?
There were a couple of Levante's outside when I was there.