Anyone run a Pertronix Ignitor III ignition module

I have the Ignitor I in two of my cars for over 10 years never had a problem. Went to the Ignitor II and could not get the car to run right. You know the saying "When all else fails read the directions !!" I needed to change the coil to their .6 ohms Coil for the II. Never had any more problems. I feel they are worth every penny and so easy to install. As for the Ignitor III Make sure to read the directions !!!!!!!!