What average life of halogen headlight bulbs are other Gen-II owners experiencing? I'm curious if my 2005 that averages about 8000 miles (10 months) between bulb replacements is normal or not. The lights are on all the time. I use Sylvania bulbs, but bulb life is about the same regardless of type, i.e. Silver Star Ultra, Silver Star, or Xtra Vision. Is there a brand or manufacturer that offers a more rugged bulb at a reasonable price?