As a first time buyer, I highly recommend it!
I don't really have a basis for comparison with any other power toothbrushes but I think it would be fair to say that this thing is among the best. I have been using the Sonicare essence e5500 for about 1.5 years now and my teeth have never been so clean. I havent had any cavities in that time and I think my teeth look even whiter than before. The brush is very easy to setup and use, first time users will feel funny after using it but you will get used to it. Make sure you take the time to thoroughly brush your teeth. All in all a great product at a great price (I paid about 60 on clearance).
Rating: 5 stars