Both moonclips and speedloaders can be fast. Moonclips are a little faster for me, mostly it's about practicing with what you have.

I make my own front and rear fiber optic sights so they are a matched set.
Most times the fibers are different heights from the top on other brands.

I would have to write a book to explain everything involved in doing a competition action job. No light strikes. It's 100% reliable with firmly seated Federal primers.