FSX. For all intents and purposes, this is the Airbus addon that is finally getting the PMDG/Majestic level treatment in terms of the most true to life functionality. It's been a very, very long wait but aircraft addons like this requite it. Here is the latest statement from team FlightSimLabs:
"It's been a bit since our last update - excuse the delay, as we're concentrating on putting together our A320-X Early Adopters' package (more details on this will be forthcoming). For now, we just *had* to share this image taken by one of our beta testers (you know who you are - thank you!) as it gives a nice glimpse of the tremendous capabilities already in the A320-X!
We know everyone is looking forward to this release! We promise, it won't be too much longer now!"
Music to the ears of a great and many thousands!