Modeling complex shape of a monitor backside Right now I'm trying to model the backside of the casing of this monitor



I have tried a NURBS surface but didn't manage to get the desired result. Then I used a regular plane which was a bit better but I couldn't figure out how to make it look smooth and "fluid". Any suggestions?
I am not sure if it is the most efficient way but it can probably be made with regular box modeling and a subsurface modifier.