Years ago I purchased a Phillips Soniccare toothbrush to help improve my dental health.  One day while on vacation, I noticed that they had a battery operated version of the toothbrush.  After checking prices, I purchased one and started taking it with me while traveling.  I have to say that it is one of the best investments that I have made.  Although battery operated, the travel soniccare never seems to fail.  I have taken it all over the country with me and I have yet to change the batteries or have it not work.   The travel soniccare also does an exceptional job on my teeth.  Although...