I have the M Sport Package (337) - which includes the self leveling (air/rear) suspension (220). Has no impact on ride comfort (bump comfort). It's a load thing.
Adaptive Drive (2VA) is an altogether different option. I have this. I like it.
From BMW: "Adaptive Drive instantly adjusts the suspension settings of the wheels on one side to practically eliminate any perceptible unevenness in the road. In addition, you can choose between a more comfortable default setting for the suspension, or a more sporting setting."
Go 50i or Go Home