Ok, thank´s :)
The old FSX was not use 64-bit OS at all. Both the FSX SE and Prepar3D have the same basic platform from the old FSX. I like to start with a new platform and I find the X Plane as a good choice!
X plane use 64 bit OS as I find very usefull since I had several OOM problem in FSX. X plane is support by IVAO multiplayser network and so on :)
Some starting question:
1.) Does the X plane has addon like ATC, weather scenery and aircraft ?
2.) How is the sound handle of the x plane?
3.) Can you co-operate in a aircraft?
Best Fredrik