Pros: energy consumption
After a couple of weeks I have been happy with this bulb. It doesn't hum/buzz like the CFL that I replaced with it. Obviously it has a longer life span, but it does cost quite a bit more. Although it may be hard to justify the upfront cost, it uses substantially less wattage than any other bulb type out there so in the long run it makes sense.
Light quality is better than CFL, though not quite as good than an incandescent.