Petronix Electronic Ignition Any Good?

If the Pertronix unit is an older one, they are almost bullet proof if installed correctly. A friend has one in his 72 Duster and has been running it for about 5 years with no problems once we got the timing sorted.
Yup. Have an old (10+ years) Pertronix in one of my trucks, and it runs great!

But would I install a new one today? Probably not, based on the horror stories I've read here and elsewhere.

(Although....it would be interesting to open 'em up and compare an old one with a new one, side-by-side....)