Keeping the Shark emptied and clean is simple, too, with one button that releases the collection bin and filter unit from the device and a second button to open the trap door on the bottom to empty it. The filters can all be rinsed in running water and, since the vacuum also comes with Shark’s Anti Hair Wrap tech, you don’t need to worry about detangling regularly, either. This hasn’t transferred across to the pet tool, unfortunately, which gathered quite a bit of tangled hair during our testing. I then combed cat hair into the carpet and ran over it using the standard power setting. Again, everything was collected with ease.

There's a suite of onboard tools which can be used with this vac too, Molly's favourite being the Anti Hair Wrap Power Tool which is great for upholstery and smaller jobs. How we test Shark vacuums The model names differ between territories too, with monikers such as Rotator, Vertex, and Apex given to models on sale in the US, and far less interesting number and letter combinations such as NV801 used to distinguish designs in the UK. In Australia, you’ll find a combination of both naming conventions. With its 4.58kg weight, the Shark IZ320UKT sits about in the middle of the cordless pile, balancing weight against power. I found it very easy to move around, with the floor head dashing around carpets and hard floors, and the LED headlights helping in darker areas. Like many of Shark's corded and cordless models, the IZ300UK is fitted with a flexible cleaning tube called Flexology. This means the vacuum conveniently slots underneath coffee tables and sofas, helping you clean those hard-to-reach areas. Switching between carpet and had floors is very easy thanks to the DuoClean brushrolls, which switch over with the touch of a button. It's also possible to go between three power levels, although we found the lowest level perfectly strong enough for the majority of tasks.

Verdict

With cordless vacuum cleaners, in particular, the raw figures give an idea of performance, but it’s only by testing them for real that you can see how good suction really is, as it’s a combination of power and tool efficiency that’s important.

Flexology means your vacuum can be pivoted under furniture using an elbow hinge at the centre of the tube. It saves you from bending and reaching, but it's only available on cordless vacuums. However, you can get extra tools if you're willing to spend more. The pet variant (the Shark IZ300UKT) comes with a mini turbo brush, while the IZ320UKT comes with the same turbo brush plus an extra battery, letting you clean for twice as long without recharging. Our house has both carpet and hard floors and a staircase that harbours all manner of detritus ground in by outdoor shoes that one or both of my kids have forgotten to remove. I’ve reviewed the top-of-the-range model with dual batteries and the pet tool, but there are three other versions that have the same basic features: IZ320UK (dual batteries, no pet tool), IZ300UKT (single battery and pet tool) and the IZ300UK (single battery and no pet tool). Design and features Overall, this is a superb performance, surpassing the abilities of the more expensive Dyson models, including the V15 Detect and the V11 Outsize.There’s a 0.7-litre bin, which is a good size for a cordless vacuum cleaner. You can empty it in-situ, pointing the vacuum’s bin down and opening the ejection flap. Or you can remove the bin from the body completely, which lets you pull out the rear filter for cleaning and thoroughly clean out the bin. On the plus side, Shark’s articulated “Flexology” elbow does make cleaning under low furniture very easy indeed, allowing you to stand up and swing the cleaning head underneath your cupboards and sofas from a standing position, without having to get down on your hands and knees. And unlike the Dyson, the display doesn't work while the vacuum is charging. So you have to rely on three less precise indicator lights on the battery to know when it's fully charged. Emptying the dust cup on any vacuum isn’t exactly fun and that’s why it’s important to consider the size of the dust bin on a new vacuum cleaner. Dyson cordless vacuums take the trophy here with bigger dust cups (the Dyson Outsize Absolute has a capacity of 0.5 gallons, whereas the Shark Pet Plus holds up to 0.085 gallons of dust and dirt.