?? Battery life and dust cup: Let the size of your home guide you. If you live in a small apartment, you can consider a corded vacuum or one that doesn’t need as much battery life; if you have multiple floors, you'll want a longer run time and a bigger dust cup. If you have stairs, you’ll need a vacuum that can easily go up and down each step a

? You have an open plan home: The Narwal app won't let you demarcate open plan spaces into 'rooms'.We'll dig into the app and gauge how well-designed, usable and intuitive it is, and how much control it offers. We'll also test any specific performance claims made by the manufacturer, as well as checking out any special features like built-in voice