I have the entry level GT86 as well.
I have an Alcon BBK on now but when zi had the stock brakes on I ran Ferodo DS2500 pads front and rear with SS lines and AP Racing 600 fluid. Brakes held up fine on the track performance wise. Very consistent feel, no real pad or fluid fade. The front rotors wore down pretty quick though.
Anyhow, I had to do the same research when trying to find the right pads for my car and I basically found that our cars use WRX brakes front and rear. Rears are unventilated but that doesn't seem to be such a big deal. For me it was the front brakes that took a real pounding.
I've listed the caliper/pad part numbers as well.
Brakes info:
FRONT- Subaru WRX 2008-2011
D929
Pic on my car:
http://db.tt/OxYWXYEr
REAR - Subaru WRX 2008-2011
D1114
Pic on my car:
http://db.tt/Xucf1m8z