I have had my oral B triumph for a year now and although i've not noticed whiter teeth, the clean i get after using it is so much better than with my older toothbrush. I even went to the dentist and he said my teeth were looking great! It has a handy timer so you can tell how long you are brushing your teeth for and you get a smiley face for reaching 2 mins :)

The only downfall I would say is the price, but buy it at a sale price and it's a bargin! I am looking to buy one for my father for christmas as I think he would like one. I'm going to experiment with the different heads you can buy to see if it makes me teeth any whiter. It is quick and easy to charge and the battery lasts for quite a long time!