Oral B Vitality
I'm really glad I switched to an electric toothbrush.  My teeth feel so much cleaner after brushing!  This is the only electric toothbrush I've ever had so I can't compare it to any others.  What I don't like so much is that it's a bit loud and makes my nose tickle when I use it because of the strong vibration.  What I like is the affordable price and that the battery charge lasts long enough to use your toothbrush for a few days without putting it back on the charger (like if you go on a short trip).  You also use a lot less toothpaste.  It also tells you when 2 minutes is up so it gets you to brush more effectively.
Rating: 4 stars