Well I have the Spring Conv. and the carbon plates. I have not noticed any difference with the clutch plates as far as fade between the two. From the research I have done. The stock clutch discs are so extensively tested they are usually the best on the market. I will buy stock next time. BTW I do a lot of drag racing and typically hot lapped and dont have any fade issues with the barnett spring conv. I did have fade with the stock clutch after about three runs. I never tried stock clutch with carbon plates so I have nothing on the fade or change with the stock clutch.
hope this helps.
Roy