over the years i have used points, and various electronic ignitions, and i have learned that a good system in good operating condition is hard to beat. a few observations;
the pertronix system is hit or miss on reliability, depending on which one you get.
as noted points are reliable, as long as they are properly maintained. the hard part these days is getting good parts for them, so when you find those good parts, and if you plan to keep the points, then buy a few points and keep some in storage for when they current ones burn out.
with all electronic ignitions you need to run the ballast resistor if the coil is supplied with one. the best electronic ignitions i have used are the factory ones. they dont have all the fancy feldergarb that the aftermarket ignitions have, so they are less expensive, and generally more reliable. you can also mix and match factory parts for the best results. for instance when i converted my old 66 falcon to electronic ignition, i used a duraspark distributor, the chrysler performance orange ignition box(called that because it is painted orange), and an MSD blaster three ignition coil. it would light a cold engine right off even in sub 30 degree weather.
and as wsa111 noted, you need to have the advance curve tuned to your particular engine combination for best results.