When choosing can lights, remember that the larger the lights, the brighter the lights. This is why 6-inch can lights are better than 3-inch lights. Even though the 3-inch lights are sleeker, they will not produce the same amount of light, and the lighted area will be smaller.
Don't forget to put can lights in corners. This prevents the shadow effect that you see in the corners of many homes.
If you want super high efficiency with no heat production, then LED can lights may be right for you. Besides not producing any heat from the bulb, the light is a much cleaner white light. These fixtures and bulbs cost between 15 percent and 20 percent more than standard can lights, as of 2010. There are no statistics on energy savings because this is a new technology.