Great brush overall
I've owned several Sonicare's over the years, including this model.  Don't be fooled, every Sonicare has the same technology no matter the fancy features.  I say save the $ and stick to the basic model. Moreover, this is the BEST in my opinion. Why?  Because this is the only battery operated Sonicare.  Why is that so good?  Because when the internal batteries of expensive rechargeable Sonicares finally die, you've got to throw away the entire unit!  With the Xtreme, I use rechargeable batteries.  They're cheap and replaceable, and I get 4 years of use on a $25 toothbrush instead of 2 years on a $100 one.  I did have to eventually throw out my first Xtreme, but I SOO got my money's worth.<br /><br />I don't give 5 stars because the last pair I ordered for my girlfriend and I both stopped working after their first use.  I blame the connections, but who knows.  The replacement brush works perfect.
Rating: 4 stars