Shop for light bulbs at your local home center, and you're likely to find a bevy of new choices. Of them all, LEDs are swiftly emerging as the favorite, not least because of their ultra efficiency. Compared to traditional incandescent light, LEDs consumes 75% less energy and lasts 25 times longer. Plus, even as prices plunge, LEDs continue to improve, with a burgeoning array of styles—bulbs, tapes, panels, pucks and more—offering an unprecedently high quality of light across the full spectrum, from crisp and cool to soft and warm. Is this the future of lighting? Many are sure of it.