It does too come with a premium travel case, similar to that of the Genius X, which allows the brush to be charged whilst inside. However, like the X, this requires a separate proprietary power adapter. Even if you do need 2 brush handles, the 2500 can be a more attractive option, because if you buy 2 of the 2500 models you will get 2 charging stands and 2 travel cases compared to only a single charging stand with the 2900.

I like the slim and grippy handle. The 2 week battery life is satisfactory and, most importantly, it does a good job of cleaning your teeth. Both do a job and give a home to brush heads, but the 9000 is a neater and more desirable solution. Lets assume you are a couple living together and you buy the 2900. It would be cheaper to buy outright, but if you went on holiday, neither of you have a travel case to store the toothbrush handle and head in. The pulsing and oscillating motion can also allow the bristles to penetrate between the teeth to reach the hard-to get-to areas. This is a cycle that lasts for 20 seconds with 7300 oscillations and 30,000 pulsations and designed for as the name suggests, cleaning the tongue.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. The reality is, you could use any mode on the brush to clean your tongue just ending the clean sooner. Although the speed and number of oscillations will be different. It does not mean the brush will actually clean the teeth better. In fact, both have the same motor inside and the same cleaning modes. However, in reality, being able to see or feel the differences are virtually impossible unless under very strict test conditions. The Genius X does command a premium for this technological upgrade and you get a little less in the box.

The Smart 6 travel case is better than some of the cheaper models. It is a white colour and is fairly robust.There is no battery in the case, to charge the brush and anything connected via the USB cable the case has to be connected to mains power. The pressure sensor benefits new and even experienced electric toothbrush users, but admittedly new users get the greatest benefit.

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 A big improvement, it means you can go between charges for longer and works better for those who travel and are away from power. A new magnetic charger means the brush can be recharged in as little as 3 hours, rather than the more typical 12. Whilst each has its place within the market, it is the Pro Series that is the most logical option for the majority. The 600 comes in light Blue or Pink whilst the Pro 2 2000 comes in a dark Blue or Pink. Both have gloss white plastic bodies.After 2 minutes the alert changes slightly to tell you that you have brushed for long enough. Unlike some brushes, the Pro 2 doesn’t power off automatically. This may be a disappointment to some, but it’s not a big issue. On the rear of the handle rather than raised plastic ridges, the 3000 has a more subtle dimpled surface. The Oral-B Pro 2000, Oral-B Pro 2500 and Oral-B Pro 3000 have charging indicator lights that flash green when charging. When the Green light stops flashing the brush has reached full charge. Equally there is a red light that flashes when the power is low. This is a really handy feature. 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 the decision was on price alone, then the Pro 2 2900 would be our overall choice, because although it is more expensive to buy, when you factor in that for the higher price you get 2 brush handles, it actually works out better value per handle.