I just bought some PIAA Super Plasma GT-X bulbs yesterday. They look pretty nice, but upon testing them out (in my driveway) and comparing PIAA bulb to my SilverStars I'm replacing with the PIAAs, the SilverStars almost seem brighter... I haven't had a chance to go out driving with them yet to see how much better if any they really are. In the meantime I packed the Sylvanias in the box the PIAAs came in and have them in my glovebox. I always carry a spare set of headlight bulbs with me as well as other bulbs. I'll post back with results of the PIAA bulbs. I couldn't beat the $66 price I paid for them though, compared to other shops that retail them for $110+
