Hahaha if I were paying $10,000+ for a set of coil overs, they better be like a Ferrari compared to other systems which cost half as much
On a more serious note, I do agree with JAJ that on a street M3, the benefits of TTX dampers are greatly diminished because the rest of the suspension have a significant amount of play in them (bushings, ball joints, etc.) Now, on a purpose-built race car it will be a different story. But in all cases, the right set up (springs, damping curve, alignment, ride height) is just as critical as having good dampers.
Cheers,
Richard