Best set of coil overs(or other options) for my M3 for my very specific needs?

[cobra]

Oh..me likey!!! But my needs would option that set up to over $10K. If I do go adjustable, I MUST have high and low speed damping capabilities.
But fiddling with four dampers instead of one on my Honda Blackbird XXX, does sound like a nightmare, if I can get a Flat Ride system already dialed in to my needs.

You don't need low and high speed adjusters. Low speed is fine and for most people a single combined rebound/compression adjuster is fine. I like having that one because it's easy to think about and you'll never perfectly tune a shock off the bench and it will need a few clicks of adjustment to make it perfect.