We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
We consider a thinner chassis better because it makes the product more compact and portable. Thinness is a feature highlighted by many manufacturers of mobile devices, but it is essential for a wide range of products.
Generally, a larger capacity boiler with a higher wattage will be able to recover and replenish quicker. This is useful if making many coffees at once.
Ground coffee, especially if freshly roasted and ground, results in much better quality coffee than the kind of results you get with pods or capsules.
The height represents the vertical dimension of the product. We consider a smaller height better because it assures easy maneuverability.
Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.