I have used many Sonic toothbrushes including Sonicare(several models) and Oral B Sonic Complete. I have tried the low end sonic models at the store on my fingers.  They totally lack power when compared to the full version brushes.  The Oral B Sonic Complete has a simple, easy to clean brush head.  It is less expensive to replace the brush head than on the Sonacare brush.  It is also easier to keep the brush system clean.  The cap on the sonacare becomes filled with sludge and can become quite foul.  The sonic complete brush head has a blue color indicator which gradually fades as the brush...