First up you need to know that this electric toothbrush is supplied with a standard 'shaver' 2-pin head, so you might need to buy a 2-3 pin shaver adapter if you do not already have one.
The product comes with 2 toothbrush heads, 1 standard head and 1 soft one for sensitive teeth. You can purchase new heads in packs of two from Amazon including some pointed brush heads not included in the box Omron Point Brush Head for Sonic Style 2 Pack
which clean between gaps.
Also be aware that you need to charge the electric toothbrush for a minimum of 16 hours on the first charge which is very lengthy but supposed to prolong the battery life. I couldn't find in the manual whether you need to charge for 16 hours every time - I do hope not! Usually with electric items, the first charge is longer.
I've never used an electric toothbrush before so I cannot compare with other brands.
There are 5 speed settings and be warned that the medium setting it defaults to may be too fast and intense if you've never used an electric toothbrush before! So I turned mine down to the lowest speed setting until I got used to the sensation.
After 3 minutes of cleaning, the brush will automatically turn itself off which is a feature I really like and the fact it pauses inbetween at 30 second intervals so you can have an idea of how long you've got left.
If you've ever had your teeth cleaned by a hygenist at the dentist - this feels just as good. I could not believe how smooth my teeth felt and fresh. It doesn't seem to rub my gums at all, in fact it feels less abrasive on my gums than a bog-standard toothbrush.
There are other settings as well as the standard speed settings but I haven't experimented with those as yet. I'm just happy with the good clean my teeth are now getting. Extremely pleased with the product.