Alrighty!! I know...the topic has been beaten to death, burred, exhumed and beaten again....BUT, I got to the point where I'm almost zero'd in on the coils that I want. Here is the list of features or characteristics that I'm looking for.

Custom spring rates (swift preferred)
Digressive piston design
Adjustable damper
Ride height adjustable by shock body and NOT spring perch
**Rubber top mount/hat**

That last one is where I'm struggling. So far I've found Fortune Auto and BC's DS line that meet all but the last requirement. The FA uses an Aluminum mount with radial bearings in the perch and I'm not entirely clear on what BC uses but it looks like a solid mount as well. SO before I pull the trigger I have 1 question to anyone who has either of these coils:
HOW IS THE NVH (Noise, Vibration, Hardness) COMPARED TO STOCK!?
I'm more concerned about the Noise and Vibration part since the hardness can be adjusted to some degree with damping and spring rates but still if anyone uses these on the daily basis please chime in.

Thanks!

EDIT:

Welp, my brain is fried after researching spring rates, shocks, coils, compression, rebound, ride height, mounting hardware and tube design for a week straight but I've come to a conclusion. KW V3s for the supra offer every feature I want and get amazing reviews from everyone. So I figured the hell with it, Imma get it