My previous toothbrush was the first electric one I'd ever owned - the groovy little Vitality. As many others have found out, that model has a short battery life, which meant that, for the last year or so, I couldn't take it off the charger. That said, it was well worth the price and still working fine as long as I kept it charged.
But finally I succumbed to the temptation to replace it, and hunted about for the best deal.
This model struck me as perfect, given what I wanted, which was:
1: value for money - slightly older models go down in price fast and they're not always worse - in fact, they're sometimes better
2: speed and efficiency of the motor - this one has a high speed for the price and seemed to get good feedback
3: no unnecessary gizmos and accessories. Manufacturers are desperate to ring the changes on what's basically a good, simple idea. As a result, lots of these toothbrushes have add-ons you simply don't need, making them bulky and heavy.
4: one gizmo I did need- the thirty-second interval buzz that encourages you to spend that time on each 'quarter' of your mouth.
5: lightness/compactness - I've got small hands and if I want to lift weights, I'll go to the gym. This one seemed both light and narrow in shape.
6: a model that also fitted the Oral B 'dual clean' heads I like to use
Luckily, when I splashed the cash, all the above turned out to be true. The brush is small, light and powerful, holding charge for a week. I've found the interval timer a great help - it has nearly doubled my brushing time (I was simply unaware I wasn't brushing for very long with my old one - shame on me!). There's still cash in my account to pay for those soon-to-wear-out brush heads. Plus my biceps are their normal size. What more can you want?