The general consensus with Subaru owners is to stay far away from the EBC stuff. I know several people experimented with the green and red pads all with disapointing results but YMMV. Also worth noting is that both cases the rotors needed replacement after using the EBC pads.

I had honestly had ourstanding results with on my '02 using the following setup, OEM rotors, AXXIS Ultimates pads, Goodridge Brake Lines and of course high performance fluid. I also added a set speed bleeders to the mix to make my life a little easier. I also experiemented with the AXXIS Metal Masters which where also good.

The downside to the AXXIS "Ultimates" was that they have a very strong initial bite making it a bit more difficult to modulate the brakes on a course but they held up with mild track use really well. The AXXIS "Metal Masters" didn't have this initial bite tendency but they aren't as hardcode but a good candiate for street/Solo II use. The both dusted quite a bit compared to the OEM pads but with no noise.

I don't see any good reason to upgrade the rotors unless you're looking for some bling factor. If they need replacing I found a website using google.com that sells OEM rotors and the the WRX rotors are suprisingly inexpensive.

Good luck!