on the original subject... i've been using Porterfield R4S pads on everything i own for years and they have never let me down. discs i don't worry about quite as much, just do new ones every time.
using this setup with my e30 with e36 brakes, it has a lot of stopping power... when i had crappy all-season kumhos it would lock them up very easily. now that i have KDWs it just drops anchor and /stops/.