When it comes to projector hire there are essentially two different types of technology vying for your attention. The first is classified as DLP, or "digital light processing," which is based on the use of a digital micromirror device and dates back to 1987. The second – and more modern - technology is known as LCD, or "liquid crystal display," and is based on electrifying a layer of tiny crystals held between two panels. These technologies between them account for most of the world market, in terms of projector manufacturing.
So, which is best in your particular circumstance?
LCD versus DLP
LCD projectors are renowned for having the sharpest image and the most colour saturation in the marketplace. When determining brightness, LCD can produce well over twice the output (versus DLP) in terms of "colour lumens." This is a standard measurement for determining projector output and higher readings can really make individual colours "pop." In a straightforward comparison between DLP and LCD, the former is known to have brighter white display, but the yellows and reds can appear dull.
LCD for the Office
As a consequence, LCD is a more popular choice when it comes to small room projecting, where maximum brightness and a vivid colour array are all important. You should choose LCD projectors if you are working in an office environment, due to their ability to display data with a far crisper and sharper look. When determining what type of projector you need for your office presentation, your best advice is not to choose an entry-level brand, as these typically have a low-level of brightness or colour lumens between 2000 and 3000. Due to the ambient light you're likely to encounter when presenting in your office, this will likely not be sufficient for a powerful and hard-hitting display. Select a model that has a higher degree of luminosity.
DLP for Entertainment
Home theatre aficionados will often extol the virtues of DLP technology. If you're looking to hire a projector for some form of entertainment, rather than in a business environment, then you should consider DLP. They tend to be somewhat smaller and lighter than their LCD counterparts, but more importantly the mirror technology allows them to produce video with a higher contrast. You often get a "deeper" black than you would on an LCD projector. This makes for a more immersive and sensory experience.
Technology is a Work In Progress
When it comes to technology, things change very quickly. What was once seen as a disadvantage for one technology could quickly become an advantage, as the engineers and technicians ply their trade in the labs. Currently, however, DLP projectors are generally recommended for a home theatre or entertainment environment, while LCD options, with their higher colour lumens, are recommended for an office presentation, or convention environment. For more information, check out companies such as Audio Visual Events.