Sorry I have no input for you, svteet. I'm all stock on the interior. But, I'm in the same boat. Looking/Hoping to do an gray ---> black conversion soon. I have some ideas on what I want to put in, but would love to see others for a different perspective. May see something that I hadn't thought of. Good luck!
Heres a picture of mine. They are Corbeau Forza 2's. Pretty comfortable for what they are. They are in my daily driver and use the car for road racing also. The only thing I dont like is the material is very thin and delicate. Anything remotely sharp will cut/tear it.