To anyone who is currently looking for some clips that are better than the originals, I ordered a ton of different, non-Subaru, clips from Amazon. Everything I ordered was stronger, however some fit, some don't. Below I am posting links to the three different products.
1. This is my top choice to replace the 8mm diameter clips in the fender liner. It's not as pretty looking as the OEM ones (before you destroy them after one use). These are also vastly more durable than OEM clips, they don't get ruined when you take them out, and they're easier to take out than the OEM "phillips" style ones. These pop out by inserting a flat head into the side and twist the screwdriver. So no need to turn your wheel to remove clips. They are a very firm fit (My calipers indicate OEM clips are about 7.75mm diameter. These are 7.85mm.) but it does fit and holds everything together way tighter. This is what should have came factory. These fit 8mm holes and seem to be about 1-2mm longer than OEM clips and like the one below, it didn't fit in the fender liner to side-marker bracket. This can be quickly worked around by filing or sanding down the pointed tip. If you want a better clip than OEM but don't care that they look different, this is for you. [ame="http://www.amazon.com/Partsam-100pcs-Plastic-Fastener-01553-0932/dp/B00MWULLP4?ie=UTF8&psc=1&redirect=true&ref_=oh_aui _detailpage_o01_s00"]LINK[/ame]
2. This is a close replacement to the OEM, however these fit a bit tighter and are vastly more durable. However, they are about 1mm longer than OEM, so these do not fit in the place of the clip that attaches the finder liner to the front side-marker bracket.... the hole in the fender liner behind the side-marker light. They work for all other locations that need 8mm diameter clips. These fit the 8mm holes. My issue with these is that they clip together so well, they're more difficult to unlock than the OEM clips. So if you want OEM look, better fit, more durable, but harder to get unlocked, this is for you. [ame="http://www.amazon.com/Subaru-Engine-Cover-Fender-90913-0067/dp/B00AZOJB2O?ie=UTF8&psc=1&redirect=true&ref_=oh_aui _detailpage_o00_s00"]LINK[/ame]
3. This is the odd-ball of my choices. This is the replacement for the larger clips under the bumper that hold the various trays and mud-guards together. These are very similar to OEM, however the material seems a bit stronger and the fit is tighter (no problems though). These fit the 10mm hole. These are really similar to the clips in the top of the bumper (in the engine bay) that hold down the metal bracket and rubber seal between the hood and bumper. [ame="http://www.amazon.com/PartsSquare-Fender-Fastener-Retainer-Subaru/dp/B012Z2X2LE?ie=UTF8&psc=1&redirect=true&ref_=oh_aui _detailpage_o04_s00"]LINK[/ame]
4. Here is the original 8mm Subaru clip. Part Number 46064AE000.
LINK