I purchased a Philips HX6911 electric toothbrush on 5/24/08. It died on 10/5/08 and was warranty replaced 10/20/08. The second one died on 7/15/09 and was warranty replaced on 7/20/09. The third one died on 12/1/10. These toothbrushes have a two year warranty and not a single one of them has lasted more than 9 months with an average life span of 7 months. I called Philips Sonicare for another warranty replacementand they told me I had gotten my two years of service out of the three toothbrushes and there would be no warranty replacement. If... read full review »