Since there is so much experience with distributor caps, does spending more money for one give you a better chance of avoiding problems down the road, so to speak? Looks like you can spend anywhere from $35 to $60 for one. It it makes a difference, paying a little more isn't that big a deal.
Like I said before, ONLY buy a factory OEM replacement (AC Delco). Many guys have also had excellent success with the Accel brand aftermarket cap. This is the one I ended up buying after the $55.00 one from the local automotive parts house didn't cut the mustard...