I would have to say that Oz would be one of the best. Oz ATC have a great reputation. Especially our Military breed who have been in places like Somalia, East Timor, Baghdad and Kabul, to name recent phew, they are number on the requisition file for O/S duty from Other countries like USA etc.
As for comparisons to O/S well they are away by a mile compared to Central America, Carribean even dare I say it Mexican. Those who critisise without taking a look out the window cant compare really.
Sheep