I bought this toothbrush six months ago after my dentist recommended it as my teeth are sensitive to anything cold and very sugary/sour food. I had never used an electric toothbrush before and it felt quite strange at first especially when the plastic touched my teeth however with two weeks i was used to it and i've used it ever since. My teeth do feel a little less sensitive but as i also use sensodyne sensitive mouthwash i cant be sure if that is down to the toothbrush or not, either way it still left my teeth shining and feeling super clean.
You have to buy replacement heads for it, they come in packs which seem expensive but in the long run it works out as pretty good value. Each head lasts a few months and you can tell when they need replacing as they have a colour changing system, the tips of the brush are lighter and when they start to fade away you change it.

It takes quite a while to charge, around six hours but it lasts for several days.
It is easy to use, simple one button control press to turn on, press again to turn off.

Overall i would recommend this to anyone looking for good-value or for a beginners electric toothbrush however don't expect your sensitivity to dissapear completely.