I bought the Philips one for 160 € and I use the oral b one for 20€ ????
It doesn't clean well the inner part of the teeth. I have also used the small head but the difference was small.
It is powerful, it has many programs which I haven't used again after a month.
If you go for the classic one, you will see a big difference.
The cleaning with the only heads of oral b is better

It is the best on the market. I bought it because my dentist recommended it to me and he was right. It has nothing to do with the others. It does a professional job!!! It is worth every penny 100%.

It's a fantastic toothbrush. I used to have the OralB and there's no comparison. The battery lasts for 3 weeks. It brushes the teeth wonderfully and has different programs. It's perfect! I also got the Sonicare Kids for my child and it's fantastic as well.