Review (4/5): Best Oral B to date
I've owned Oral B electric toothbrushes for 20 years, and this is the best one yet. It has more power and it holds a charge better than any of the previous generation.
I take it on business trips, and it is plenty strong to do the job even after a full day of travel and not being plugged in.
I would rate it a 5 if there were some clever means to attach the charger to a wall. Also, I've only had it a few months, so I can't vouch for the battery life.