Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I really wanted this to be wonderful

I've had it for three months, and my enthusiasm has waned with time.The plusses -1) It hits so many surfaces at once, that it's easier for me to brush my teeth quickly and thoroughly (and I tend to have a short attention span on this important activity).2) My teeth are incredibly clean when I use this, and my gums are, too, to a degree.HOWEVER, the minuses:1) The back-and-forth motion doesn't get under that area of the gums, at the border of the teeth, where much of the bacteria forms, which makes flossing more important with this toothbrush than any electric I've ever encountered, thus mitigiating the time advantage.2) It's not well built, the drip guard broke after two days of use, and the motor always sounds like it's on the verge of collapse.3) It doesn't hold a charge well.4) The brushes don't last long.CONCLUSION:This is a terrific concept, that needs tweaking in the motion of the brushes, and better manufacturing. Until then, I'm moving back to Sonicare.