BMS is state of the art Falcon.
What BMS really did was give us a much better jet. There are fixes and new features across the board. But it's the jet that is what makes BMS what it is. Systems, avionics, weapons.
The campaigns aren't much different and in some ways AF had better ones.
I'm a big supporter of Allied Force and what it did for the Falcon community. But once you've experienced the BMS jet there is no going back.
Best combat flight sim bar none. In my opinion that is