Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very Short Lifespan :-(

I tried these and were impressed with their bright white light output, but was extremely disappointed with the lifespan. I didn't make it a year with the first set, tried again, and one bulb didn't make it eight months. Living in a small town where overzealous cops pull you over for having lights out, I went back to Xtra-Vision bulbs that last much longer. If you look on the back of the box it clearly indicates that the more expensive brighter bulbs last half as long as some the less bright ones. It is hard to believe they cannot make bright white bulbs that last longer. Hopefully LED headlights will have the right performance and price soon.