Philips cfl bulbs are very effective and energy saving bulbs. I am using it from more than 5 years and its result is always satisfactory. It is very bright than any other cfl bulbs. It also has a energy saving feature in it which helps us to save more electricity.
Philips provides 1 year guarantee in all its cfl bulbs. Though it is very rare that it lasts for less than a year but in case it happens then we can replace the cfl bulb with new bulb.