AES/GSX. There are some very interesting comments between Mathijs of Aerosoft and Umberto of FSDT regarding AES and GSX. As I obviously don't want to take anything out of context, we'll simply refer to the link. Some very interesting comments from both sides indeed. I just hope in the long run, the situation can be simplified and the two products will benefit simmers better as a whole.
Perhaps the future will see the two of them exchanging more beer instead? Either way, you can see the exchange between Mathijs and Umberto here: http://forum.aerosoft.com/index.php?/topic/52347-gsx/