My mum has had her carpet sweeper for years and does a good job so I thought I would get one. Bought this sweeper and it is a complete waste of space. Due to poor design, after using it for a while the two pieces of metal that attaches to the sides of the sweeper bows, so all the mechanism falls out of the bottom. This is a completely useless sweeper do not buy.
Nil
Completely useless, inferior design and quality.

I used to have carpet sweepers and they were good when working. Old one fell apart so got another one. When I bought This one from supermarket at good price, I put it to use and it failed after few minutes. Roller cogs didn't engage so it was a waste of time pushing this unit. Wouldn't buy this design again.
Price.
Mechanical failure meant that rollers didn't engage so, brush wasn't turning to do its job.

Fantastic product, I inherited this from my mother last year. I live in a three story home. Purchased a second one early this year for downstairs and then realised it's about 9 months since I've used a vacuum cleaner because it's just so easy to pull out the carpet sweeper. Just going to purchase a third one for the rug at the front door on the top level! So now I won't have to carry this lightweight sweeper up or down any stairs at all and it just sits in a hall cupboard. And, I have a dog with fluffy hair.
incredibly effective, enegery efficient, quick, lightweight.

I brought one of these off ebay recently. It was affordable, it works like a charm, and since it uses no electricity it is pretty energy efficient too :)
The dustpan space holds a fair amount. I have a large house and a few indoor pets and I usually only have to empty it twice for the entire house (once half way through, once at the end). It has picked up a surprising amount of detritus and dirt (first time it picked up heaps of hair and other bits and pieces and I had washed my carpets three days before).
It is light and easy to use, plus no cords means it is less fiddly which makes it pretty quick to get my whole house done :)
Energy Efficiant, Inexpensive, Effective, Easy to use