I found a great alternative to silverstar ultras. Liked them but got tired of them burning out so fast and having to change them so often. Found solux bulbs that have increased performance (80% brighter, natural daylight color of 4600k, high contrast, longer beam, etc.) but also maintain the longer life hours similar to standard halogens (which translates to 2x-4x longer than ss ultras). I replaced low-beam, high-beam and fog lights and really like them a lot - I can see much better and my eyes don't get as tired at night. So far, so good...