Item : B00008BFXG Customer Reviews Philips Sonicare - Advance 4100 Sonic Power Toothbrush by .. Debra Andrada (Ukiah, CA) I love my Sonicare! I've had one before and it finally "died" - I used it most every day, so it received a lot of use. In fact, I ordered the same model again, because I was so pleased with the first one! For someone who always had at least one cavity or some other type of dental problem at checkups, and to only have had one in the last 10 years, I am sold on my Sonicare! Great toothbrush by .. Doris L. Muotka (Lynnwood, WA USA) I ordered a new Sonicare toothbrush to replace my old Sonicare that gave up the ghost after 11 years. It came in the stated time, arrived in great condition and I'm still enjoying using a Sonicare. Solid Product by .. J. Anderson (Cloquet, MN) My first Sonicare was purchased in 2002 and it performed perfectly until this year the battery finally would not hold a charge. It has performed beyond expectations and I expect this replacement to do the same. Sonicare toothbrushes are the most recommended by dentists. If you are still using a manual brush, you're missing out and you are doing your teeth a disservice. The Sonicare gives a cleaning that rivals a cleaning in the dental office. Love the Sonicare electric toothbrush! by .. Andrea N. Desillas () Mine holder/handle died after 10 years of use and could not find this specific model anywhere except on Amazon.com 4100 has been discontinued, lower VBM than newer models by .. BAM () Sonicare model 4100 has been discontinued. I have used this model for YEARS and love it. However, the newer models have a higher vibration per minute. A jump from about 20,000 vbm on this model up to 31,000 vbm on the Essence, Healthy White and Flexcare models. In terms of features, the three newer models are ranked low to high respectively with Essence at the low end. I have ordered an Essence based on the vbm increase, but have not received it yet. My Mom has used both the 4100 and now has a new Essence. She does not like the skinny neck on the Essence. For more information on model differences and benefits, call Sonicare at 1-800-682-7664