Its not the price of the cap or brand. Its whats in then . You want solid copper it wears better than cheaper aluminum and I'd seen some Delco With aluminum in them. And I've seen some cheap caps For $17 that have solid copper in them the copper wears a lot better than the aluminum and transfers electricity better.Stay away from any opti parts that are not AC Delco, MSD, or Dynaspark. Even the cap and rotor. Do yourself a favor and buy quality parts for the opti, or else your gonna be doing the job over and over.