ignition system ?????

My vote is for MSD. My 440 sixpack started out with the factory dual point. Then I went to the Chrysler Nascar electronic ignition around 1980. By then I had rebuilt the engine with 454 heads/harden seats purple shaft and Rhodes lifters. Could not get a good idle under 1500 rpm until I went MSD-now it is smooth at 700 rpm....
Lynn