Anyone on here owns or tried any of the diode dynamics fogs? - https://www.diodedynamics.com/luxeon-led-fog-lamps-for-2015-2020-subaru-wrx-pair.html Or this - https://www.diodedynamics.com/ss3-led-fog-light-kit-for-2015-2020-subaru-wrx.html
I have not tried those, but I really like my Baja Designs Squadrons that I installed in the stock foglight location. The DD lamps look pretty nice too.
I just use the film from LaminX, pretty good except make sure you're not running hot bulbs or they will turn brown in the middle.
I have DD for all my interior lights, and they work superbly. I wouldn't be surprised if the exterior lights are the same. Just remember if you do your turns you need the relay unless you want fast blinky lights.
From what I understand, the relay is just for the turn signals. They run on a lot less power, so the car thinks that it has a turn signal burned out, hence the crazy quick flashes.