I'm running Adaptive Drive in my F11.
That's made up of Variable Damping Control & Dynamic Drive, (Also known as Active Roll Stabilization). Adaptive Drive hardware is therefore VDC + ARS.
If I was in the 5GT with its higher stance, I'd definitely want the ARS part of the technology as, IMO, it is the impressive part of Adaptive Drive. The ability to corner very flat, (even on the comfort setting), virtually decouple the ARBs on the straight to improve single bump ride quality. In sport settings, the whole chassis firms up and gives a superb blend of characteristics.
Not tried IAS, so can't comment on its feel, other than knowing it makes a chassis feel smaller and more agile in the turns.