I have been using BRITA Water Filter Cartridges for about six years now, and will never go back to drinking straight tap water again. The adverts you see on TV are spot on, I no longer have to go through the lengthy process of de-scaling the kettle and then worrying as to whether I am about to poison the family by not getting rid of every last trace of the de-scaler from the kettle, tentatively tasting the first cup of tea for signs of bitter de-scale remnants. I no longer have to deal with the disgusting sludgy lime scale, that we seem to have in our area building up in my kettle, but worse yet, knowing that I must have had that sludge going through my own system!!
It's no wonder people end up with kidney stones, after all, the kidneys are our own filter system, and certainly where I live with the water being so chalky and full of lime scale, it follows that if your kettle gets full of this stuff then your kidneys are going to feel the impact too. In my mind it makes sense that if I eliminate the lime scale from my kettle, by using the Brita jug and filter, then I have to be eliminating the lime scale from my body too.
I would religiously go and buy a filter each month, opting to sometimes buy packs of three when the supermarket had them on "special". That is until I discovered the wonders of the web, I really could have kicked myself, when just recently I discovered that you can pick up this 6 pack of BRITA Water Filter Cartridges at Robert Dyas, at a much cheaper price of £16.99! Granted, you buy 6 months at a time, as each cartridge will last for up to 1 month, however, your savings are almost double, which makes this a must have bargain for all us filter freaks. 
Incidentally, your water filter cartridges by BRITA can now be recycled at Robert Dyas, Argos, and some branches of Morrisons, doing your bit for a greener world.
That's it for the time being from this bargain hunting Mum, chat with you soon,
Katrina
