Never did the 9005 conversion but I got PIAA Extreme White bulbs when I first got my GSR...they lasted about 2.5 years and made a small improvement over stock. When they died I moved on to a Phillip's 4300K HID kit. From what I hear Sylvania Silverstars are very good...I got information on them when I got my HIDs (came in the box) and they seemed impressive on paper.