Fan of Power Toothbrushes for 10 years!
I've used different brands of power toothbrushes for the past 10 years.  I started off with the Colgate battery powered ones, and they were good for dorm life but not a longterm investment.  These Oral B brushes are great.  They have different variations in the $20 price range, and they're great investments but keep in mind the rechargeable battery does eventually poop out (I've had to replace mine about every 2 years).  This last part I don't mind because dirty mouths yield dirty toothbrushes!  The instructions state that to properly clean after brushing, you need to remove the brushead and rinse under running water.<br /><br />PROS:<br />This model has a rubberized grip, 2 minute timer (I didn't brush long enough before), rechargeable, never experienced overheating, since using these brushes my dentist says my gums look great, small enough to get precision cleaning<br /><br />CONS:<br />Will most likely need to replace unit every 2 years or so, expensive brusheads (keep an eye on Amazon sales) - I might put too much pressure on my brush but I have to replace a brushead every 2 months although the savings in dental bills make up for that!<br /><br />If you're new to power brushes, it takes some time to get used to the vibrations, but that's the cleaning mechanism.
Rating: 5 stars