Excellent lamp that combines satisfactory color (not white-blue, not yellow) with performance. Fortunately, it is not 6000K as it claims, but slightly lower (around 5000K-5500K), so it neither bluish nor yellowish. In night driving, they are much better than real 6000K (No-Name) ones I tried before and of course more comfortable. I consider them ideal for those who want very good performance without the yellowish color of classic 4300K bulbs. I don't have an opinion on lifespan yet.