I'll start off with the only negative I personally have for this set: the SmartGuide. This tells you what section of your mouth you should be brushing at the time, however there isn't much need for this as the brush itself pulses and makes a noise whenever it is time to move onto another section. A benefit this SmartGuide might serve would be with a child to illustrate where they should be brushing, and the smiley face might encourage them. This guide will add on to the price, so if you don't need a waterproof clock or a illustration of where to brush then I would recommend getting another set without it as it should be cheaper. This is the only thing that has stopped me giving a 5 star.
The toothbrush itself is fantastic and I would recommend this. If you're not used to a pulsonic brush, as I wasn't when I got this, then it may feel strange to begin with and you might not think it is really brushing your teeth well. However, once you are used to sensation (which didn't take long) then you will realise your mouth really does feel very clean afterwards.
It is a bonus to get extra heads included in the box, 3 heads in to total.
The travel case is very useful with space for the toothbrush unit and 2 heads. It is a good size to fit into a washbag for travelling.
Overall this is a very good set and I would highly recommend it.