I have replaced my fluorescent tubes because me eternal start was annoying. Chill the LED lamps have the same light output as the fluorescent tubes. The light color (color temperature) is also in the fluorescent tube used previously. Switching and light is obtained comparable to an incandescent lamp, the energy saving is about 50% of the purchase price apart. A mistake is the RF interference. In FM area is on the whole band noise present what will disappear when you turn off the lights. Relevant reports and tests to interference from LED lamps are available on the web.