Place these brushes side by side and it is almost impossible to tell the difference between each of them. Oral B Pro timer buzzes after every 30 seconds to direct you to brush the other quadrants of your teeth.

Oral B Pro 2 2500 N with its bristle protection technology helps inhibit microbial growth for up to three months. The additional advantage is that it notifies you to brush all the corners of your mouth. All three toothbrushes provide you with a charging station. The Oral-B Pro 3000 is a little more fancy because it allows you to hold two brush spare brush heads upright next to it. This is pretty handy if you are sharing the electric toothbrush holder. ThePro 600 offers 8,800 oscillations and 20,0000 pulsations whilst the 2000 offers 9,900oscillations and 45,000 pulsations.

The Pro 3 – 3000 has 3 cleaning modes (Daily Clean, Sensitive & Whitening) compared to the 2 modes (Daily Clean & Sensitive) of the Pro 2 2500.

The 3D white head is designed to help polish stains on the exterior of the teeth and make the teeth appear whiter, whilst the Sensi UltraThin is a softer bristled head that pairs well with the Sensitive cleaning mode available on the Pro 2 2000. The Pro 2 2000 has a Li-Ion battery offering 14 days use compared to the 10 days of the NiMH of the Pro 1000. The battery indicator light is not good, especially when compared to the more expensive Oral-B models. It does not give adequate warning before the battery runs out.Despite both brushes coming with multiple brush heads, the travel cases provided with each brush are capable of holding the brush handle and 2 heads only. What I mean by this, there is no evidence that I know of that suggests the Genius 9000 is technically better at cleaning the plaque away than the Pro 2 2500 and therefore make it worth the investment.