Canon LV LP13 - Projector lamp
Price: $374.99

Canon has a worldwide reputation as a technology leader. Canon owns an extraordinary history of developing innovative office machines. It has demonstrated by its continued presence in the top five of companies, awarded U.S. patents each year. Canon ranked first among Japan-based companies and second in the world for companies receiving patents awarded by the U.S. Patent and Trademark Office in 2005.
Canon has developed and is taking advantage of proprietary high-precision technologies in the fields of innovating environment, quality, cost, and delivery (EQCD) and achieving optimal production. Canon supplies best-rate accessories for its products. The same superiority of design and manufacture goes into all of the Canon-branded consumable imaging supplies and parts for this equipment.
Naturally, no one makes better parts and supplies for Canon products than Canon. Canon is celebrated for its quality and style.
With accessories from Canon you have the best of both worlds!
Canon has introduced Replacement Lamp LVLP13 with 200W UHP for LV-7545 - 7670A001
This is a 200-Watt replacement lamp for Canon’s projector model LV7545. Its features are

• It is very bright
• The maintenance cost is low
• It benefits from low wattage
• It is more efficient and
• It is painless on the eyes
• It utilizes less energy.

Sony 120W UHP Projector Lamp
Price: $338.99

The Sony PX1 is unique because when it is working, it sits on its side in the straight up position. The Sony PX1, in all our research we have never run across somebody that was dejected with their PX1. The beamer, as the Dutch call it, produces a fair amount of ANSI lumens, 1000 to be exact. When we test ran the unit it could easily project a bright, clear image onto our screen in the daytime. The PX1 has an aspect ratio of 4:3 and two resolution settings. The native resolution for the projector is 1024×768 and the maximum resolution for the PX1 is 1280×1024, making the unit absolutely capable of handling the resolution levels of most personal computers without problem. It is perfect for watching movies in class, especially for 1-6th graders who will think the projector is the coolest thing ever.

Setting your projector for its low power mode drops the brightness by about 20%. We concur, however in our reviews we find that the range can vary from as little as a 10% drop (barely detectable) to 30%, depending on the projector. Projector’s low power mode has two major benefits. First, the longer life. The typical projector claiming 2000 hours in full power claims 3000 hours in low power mode. That can differ, however. There are models out there that claim no increase of life in low power, and in some rare cases - a few Mitsubishi projectors, for example, claim 5000 hours in low power mode. The bulb may explode if they are used beyond there rated life.

Manufacturers design the mounts to limit damage, but you will need to get the projector serviced if your lamp does explode. Today’s projectors have two brightness modes, many now follow low and full power independently and adjust their warnings per your handling. Most warranties provided by manufacturers, are 90 days or 500 hours. In couple of years, however several companies that offer third party extended warranties on projectors have been offering lamp warranties as well.

source: http://www.projectorreviews.com/projectorlamps/ProjectorLampLife/index.php