I can only talk from exeprience about Philips blue vision and Osram Silverstars. The blue visions were better than standard bulbs in my Volvo but they wore out in less than a year(driving lights are on all the time though), the Silverstars were slightly brighter and seem to have lasted much longer so far. I didnt get the PIAA bulbs as the review I read stated that they werent any better than some of the other higher powered bulbs and are manufactured in china by the same factory as some of the others in the review(other makes inc philips, osram, halfords own, lucas etc although i cant remember which are made were). They summed the PIAAs up saying that your only paying for the name really. Silverstars got the editors choice though.