(Oh dear, I'm showing my age with that title!)
After a lot of (mostly tedious and confusing) research into rechargable toothbrushes I decided on this Braun 2000 model due to:
1. Price
2. Some good features but not too many that they're gimmicky and pointless
3. Some very good reviews
4. Reasonable price of replacement heads (via Amazon, natch!)
I haven't been disappointed. This was my first experience of a non-manual brush, if you will, and I can definitely say, I'll never go back!
The 2000 comes with two heads; one standard, one sensitive, although I have to say I couldn't really discern any difference.
The features I do find very useful. It's scary to think just how long two minutes is (the minimum recommended time you should brush for) and as soon as I started using the 2000 I realised I'd not been brushing for anything like as long as I should have even though I thought I was! It also points out when thirty seconds are up so you can move on to another 'quarter' of your mouth and tells you off if you brush too hard by flashing a red light. This is a particularly good thing for me as the dentist just told me I've worn away the enamel on one tooth by over zealous brushing...oops!
Apart from these, I can't think that a toothbrush can do anything else that's relevant or needed and if they do, I feel they must be added to justify a higher priced brush.
My only niggle is the base unit which is not particularly well-designed but hey, you can't have everything and it's the least important bit anyway.
I'm so impressed with the Braun 2000 I've even converted my husband and in fact his has just arrived from Amazon and is charging up as I type!