the foundational problem may not be the pad. As you probably know Subaru has updated the original pad design twice and coming out with a third revision soon. I suggest you at least get a record of your concern with Subaru of America so when it is duplicated they can take care of you. Make sure you also note on the record the pad thickness.They're giving some light squeal again. It's rather intermittent. Of course, it doesn't happen when it's at the dealer. I took a ride with a tech to demonstrate the hood flutter (we have the problem where the hood skin is not bonded to the structure correctly) and I could not get the brakes to make any noises during that drive. But they're somewhat noisy intermittently when the tech is not in the car!
I don't know what I'm going to do about it yet. I really wish someone like Raybestos or Centric or Akebono would come out with a replacement pad for this application. So far, only Power Stop has pads that fit and I haven't had any experience with them.