When my last Dyson Hoover died on me after 15 years as it has lasted so well I felt that it had to be a Dyson again. They are definitely worth the expense.
I chose the Dyson DC23 because we wanted something more compact than the upright Dyson that we had previously. This model is very compact and the hose and wand winds around the base very well and easily. The power cable pulls out of the base and automatically rewinds on the press of a button. It comes with the main floor tool and 3 attachments (stair tools, crevice tool, brush tool). It is also very good at getting pet hair off the carpet, which other Hoovers don't seem to do.
The Dyson Hoover sucks up alot of stuff that other Hoovers leave behind. Once you have used a dyson, you will never use anything else.
A Dyson Hoover is a good investment. Even though it is expensive, it pays for itself over and over as it last a lot longer than other Hoovers and requires no bags or replacement filters. The filter on this Dyson needs washing occasionally. In the instructions it recommends every 3 months.