Air Suspension VS Coil Overs 2007 S8
 

I have a 2007 S8, love the car.
My driver side front air bag is going bad. Should I replace the air spring or change the car to coil overs? I can do the work myself so the cost of two front air springs is about the same cost as an entire coil over retrofit. Does an Air Suspension delete exist for the ECU?

Thanks in advance