Hey everyone! I am regularly buying this Philips cfl for my house because it is the best cfl I ever seen. It has a 1 year guarantee duration but it will work more than a year. I am using this Philips bulbs for last 4 years. There is no option because it is giving a full satisfaction to all the users. It will be weightless and it gives a bright lights. The price may be somewhat higher comparing to others but going with durability and satisfaction Philips will with stand long. So without any doubt I strongly recommend this Philips cfl to everyone!