[Milban]

I'm shopping the Z06 and getting down to the real world livability details.
I've got an M4 on order and the delays make all (most) of us look around. I love the around town daily driving enjoyment of massive torque. The Z06 has gobs of it, and although the pics of the car are polarizing, the car, in person, is impressive.
The idrive w touch writing surface is one of the not so highly published, wonderful features of the M4. Being able to control the gps from it, while driving, is a huge feature. Does anyone know how this, and any other of the not so heavily published details of the Z06 compare?