So, out of these, what is the best antivirus; what should you buy?!
Avira Antivirus Pro 15.0, Kaspersky Lab Internet Security 17.0, Norton Norton Security 22.9 and Trend Micro Internet Security 11.1 all achieved the highest scores in all three categories - Protection, Performance and Usability.
These tests are based on a continuous evaluation of 18 home user security products through May and June, using their default settings. They were allowed to update themselves at any time and query their in-the-cloud services. They focused on realistic test scenarios and challenged the products against real-world threats. Products had to demonstrate their capabilities using all components and protection layers.
As to which product you should buy, it also depends how many devices you have (some products can cover more than one) and what special offers the company is running when you want to buy. But we would always suggest one of Kaspersky, Norton, Bitdefender or Trend, as they are the most consistent performers over many years and with different Windows Operating Systems.