I bought a Pampered Chef one at one of those parties where you spend far too much money on things you hardly ever use, and it was the biggest waste of money I've spent for a long time, and I am very good at wasting money. I think it was about £16 for the chopper and I have hardly ever used it, it is painful on my hand, fiddly to wash up, fiddly to dry..
As you will gather I am quite bitter about it
The only good thing was that I got a free baking tray with it which is excellent and I use it all the time.
I also later found a chopper virtually the same at the pound shop!
I eventually got one of these [size=78%]
http://www.johnlewis.com/kenwood-ch180-mini-chopper-food-processor/p230843343[/size] which cost less and is good for breadcrumbs and onions. Almost as fiddly to wash, but doesn't hurt my hands.