Did you already wear out your OEM rotors, or just wanted better stopping power?

No, stock rotors are fine. To be honest, I mainly like the look, but hope that they will provide a bit better stopping under extreme conditions. :-)

Hope this isn't a redundant question to any of your thread posts, but did you keep the 15mm spacers with the Stop Techs?

Yes, I still have the 15mm on the front, but I put 20mm on the rear :-)

What are you lower on?

Just the Eibach springs