Review (5/5): Worth it
I had an older model sonicare, and it lasted me over 4 years before the battery simply would not hold a charge. After going back to a regular toothbrush for a couple weeks, I broke down and bought this as a replacement. I definitely prefer the new style brush head to the older model, and this model still provides that extra-clean feeling that I simply wasn't getting with the manual brush.
I highly recommend this product. As a college student without dental insurance, I can say that an ounce of prevention is worth four cases of beer.