Review (3/5): get the Vitality . . .
Braun's competitively priced electric powered toothbrushes are very good values and reliable performers. Most models use the same rotating type replacement toothbrush heads.
The Advance Power 4500PX Bright D4510, like most electric toothbrushes that use AA batteries, delivers significantly lower brushing torque than a toothbrush with a built-in rechargeable battery, such as Braun's Vitality model. The Vitality may cost a little more, but it delivers a lot more brushing power, and the high capacity battery allows for many uses between recharges.
Both Braun models will do a good job, however the faster more powerful Vitality, will probably get more done in the same amount of time. Given the small price differential, and long life rechargeable battery, the Vitality would seem to be a much better value. Those who prefer a more gentle brushing action, can go with the 4500PX, or any of the multitude of AA battery powered toothbrushes available.