Less-Costly LEDs. ViriBright LED Light Bulbs offer the efficiency, durability, and dimmability of LEDs at a price closer to what you'd expect to pay for high-quality compact fluorescents. They come in tubes, downlights, spots, and various lamp bulbs. A 5-watt A-line lamp (comparable to a 7-watt CFL or a 40-watt incandescent) costs about $13. A 20-watt 4-foot T8 tube (the equivalent of a 40-watt T8 fluorescent tube) costs about $33. Matrix Lighting, 877/847-4276, viribright.com.