Pros: Great light, long lasting, low power
Cons: Expensive, doesn't dim.
I was really impressed at both the amount and quality of light this little guy put off into my office. It springs to life instantly (unlike CFLs) and (I tested it myself) simply sips power. It's at least 90% more efficient than incandescent light bulbs. Luckily for me, I got the bulb for free from EarthLED as a sample so I could better write about the bulb, but I'm looking to outfit all the non-dimmable lights in my house with EarthLED CL-5s.