So reliability as well as a more effective spark advance are the reasons. They are good reasons.
I’m on a different path - am not pursuing a concours style condition but I appreciate originality where it doesn’t detract from safety or pleasure. The Lucas 25D is about as evolved as a conventional distributor you can find, and for cruising around country roads the performance is fine (for me). Is certainly not perfect but for me is all part of the charm (like the ridiculous Oiler!).
I think to be safe I’ll keep my Pertronix kit in a zip Loc bag in my car just encase my backup points crump on me! Would be an easy enough roadside repair.
