Both models offer most of the benefits of an electric toothbrush without having to pay ‘too’ much for them. Both come with a premium travel case and a 2+ week battery life. A visible pressure sensor, 2 minute timer and pacer are built-in too. iO Series vs Genius X

In the very near future we will have a guide that explains this all in detail. However, here is the short answer for now. 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. There are fewer gloss plastics and large expanses of rubber grips, with a much more exclusive looking design. It's common knowledge these days, but everyone is recommended to spend two full minutes cleaning their teeth. As a nod to this, the Oral-B Pro 2 2500 provides an audible warning via a slight pause in the brush motor every 30 seconds. This acts as a cue during brushing for you to change your focus between the four different quadrants in your gob: upper right, upper left, lower right and lower left. It’s a nice touch that works really well.There is not much difference in the size and weight all told, only a few grams but sit them side by side and we think that most would prefer the in-hand feeling of the Smart 5. Perhaps long term the benefits and effects of the more powerful motor are noticeable, so for peace of mind, there is an appeal to opt for the Pro 2 2000. If you look at them, you will see that the Pro 2 2500 has a large rubber grip that runs down the front of the handle, which the Pro 3 – 3500 does not have. The Oral-B Pro 2500 trumps the other two by coming with a travel case. I find a travel case extremely useful to protect the oral-b pro 2500 when on my travels. In a funny way it makes me want to bring the Oral-B Pro 2500 just because it has the travel case. Verdict: Portability The Pro 2 2500 comes with 3 different brush heads (CrossAction, 3D White or Sensi UltraThin) compared to the 2 brush heads (CrossAction or 3D White) of the Pro 3 3500.

Both brushes come with thestandard ‘Daily Clean’ mode. They both then have a Sensitive mode. It is only the Pro 3 3000 that has the ‘Whitening’ mode. The lower powered mode is ideal for those with inflamed or bleeding gums, or if you find the Daily Clean mode too intense. Our Oral-B cleaning modes article goes into more depth, should you want to know more.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.