Which hand vacuum cleaner is suitable for you depends entirely on your wishes. For example, if you want to vacuum your car or stairs wirelessly, a mini hand-held vacuum cleaner with a battery is sufficient. When vacuuming carpet or Laminate, for example in the kitchen, a device with a cable is usually required.
(with or without Li-ion battery, very small, quiet, compact, light, with brush, without bag, etc.). It is important that you first define the application domain and then decide which necessary properties are most important to you.
You can also browse testimonials from other buyers to get impressions and to find out which brand you can buy which device from cheap and which model like at Aallergies, performance on animal hair or Wet and dry vacuuming cuts off These are all points that you should consider when buying.