The best part of Philips tornado cfl bub is that their brightnes is not comparable with other brand and very cool lighting lowest mercury is used so that it makes no 1 in lighting .
Its last also more than 5 years and a litlle bit costly anway that is ok because you are getting qualtiy I am a quality conscious guy 14 waat is enough for one room lighting in moderate condition that saves your electricity in turn saves your money