The Best LED Lightbulb - You'll be surprised

Should you switch to LED?
If you're still using incandescent bulbs, note that LED bulbs have the potential to save you about $20 per year per bulb. LEDs also use a third to a half as much power as CFLs and work more consistently with dimmers.

After researching more than 70 LED bulb options, selecting 18 finalists, and testing them in an alcove with a light meter and a dimmer switch, we found that Walmart's Great Value LED 60 Watt Equivalent (10 Watts) Dimmable Soft White hits all the marks that make a bulb great. Walmart's bulb spreads light in all directions, lights well, dims evenly, and turns on instantly at full brightness. At $6 per bulb, our pick was the least expensive dimmable bulb we tried. With regular use, each bulb can pay for itself in the first year.

Source (Engadget/Sweethome):
http://www.engadget.com/2015/10/23/the-best-led-lightbulb/