The replacement heads are a little on the expensive side, with a pack of four costing around £10-£12. This is a shame, although as the initial outlay is quite low I think the total cost is reasonable. When using the '500' it has a built-in timer which pauses the brush every 30seconds, and a longer pause after 2 minutes. This allows you to keep track of how long you have used the brush for which I find very useful.
The '500' comes complete with a mains charger. I just plug it in once a week and a flashing red light on the shaft of the electric toothbrush indicates low battery. This light then turns green once fully charged. Unfortunately the '500' doesn't come with a charger which can be plugged directly into the mains power (it requires a shaving point) and I had to buy an additional adaptor in order to charge it. For me, this is the only negative point with this product - apart from the cost of replacement heads, of course.
Overall the '500' would make a decent first electric toothbrush for anyone wishing to try them out. You won't be dissappointed. The Braun Oral-B Professional Care 500 will change your opinion about the use of electric toothbrushes, giving you a clean feel and lower dental fees.
I have used many different manual toothbrushes with varying degrees of success and have occassionally owned electric toothbrushes with (unfortunately) limited results. Each electric toothbrush I have owned has been of the budget variety, and the Braun Oral-B Professional Care 500 is no different in that sense. Costing around the £20 mark from my local supermarket (Morrisons) . Electric toothbrushes are a lot more efficient at teeth cleaning than doing it manually, with this particular model pulsating 20,000 time and rotating 7,600 times per minute. With a simple and slimline design, the '500' is able easily reach the back molars. Brushing your teeth with an electric toothbrush is much less hard-work than manaully and certainly leaves a better result.