I am debating on replacing the headlight bulbs on my '99 Corolla. I have had the car for 5 years and they are the same bulbs that were on when I purchased it. My daytime running lights use these bulbs,(it does not have separate bulbs for the daytime runners) therefore they are on all the time. Should I replace them even though they have not burned out? I have read that bulbs do dim over time; they seem a little "dim", but it could just be me trying to justify the price of replacing the bulbs
. If I do replace them, what is a good, regular(not blue tinted), bulb?