There are many factors that affect the quality of a projector lamp, but the most important are the brand name and the technology used in the manufacturing process. In general, it is best to choose a higher-quality brand when purchasing a new lamp. One of the main reasons for choosing a higher-quality brand is that they are likely to hold up better over time. As a result, you will likely get more use out of your lamp in the long run. Furthermore, a high-quality bulb will typically produce more light than a lesser-quality one and will last more lamp hours.