I HAD a pertronix until it stranded me and gave me a $250 towing bill. Can't really say it was ITS fault. My installation, tho easy and cheap was too fast. I didn't allow enough slack in the system, OR didn't tie-wrap the wiring away from the rotor. The internal wiring as rubbed by the rotor until the wiring was worn thru! I hadn't enough foresight to carry points and a condenser with me, so i was SHOT. I put points back in when i got home and a couple of weeks later installed a Crane 700 for POSITIVE EARTH. The new ones don't care what ya got, so i obtained it fairly inexpensively. It made me nervous having to CUT the points pivot post, and getting it all set up really was a pain compared to the pertronix, BUT..... ..
that was over 2 years ago and not a problem since. i DO carry a spare dizzy completely set up and ready to go just in case, since i can't just swap points back into the old one,
just in case !