Pretty good summary, I've owned Staton, Bmp and the Dimension Edge fd kits.
One slight correction needed here:
Originally Posted by MaxPower
Most kits rollers are supported by two bearings but DE’s is connected directly to the engine with no supports.
The DE kits, both the direct drive and centrifugal clutch models, do have
two support bearings on the drive shaft where it enters the engine channel.