Just chiming in for the Autronic option.

I have an Autronic on my MY00 GC8, EJ207 bottom end, WRX heads, VF48 turbo, 183KW at the wheels @ 19psi on Race Torque's roller dyno. Its my weekend toy, drives like stock when cruising about, goes like a rocket when I put my foot into it. The Autronic is old but smooth.

Tuned my ASG, re-tuned by Race Torque Engineering. Read into that as you please.