Microsoft Defender is the most suitable free antivirus solution for most users, integrated into Windows 10 and 11 by default. It requires no additional effort from users, making it a convenient choice for everyday protection. For paid antivirus options, Bitdefender Total Security is priced from .99 or £49.99 annually for up to five devices, offering extensive features including malware detection, a VPN, and parental controls. Avast One starts at .88 or £32.49 per year for three devices and has a high malware detection rate, along with a built-in firewall and VPN functionality. F-Secure Total begins at .99 or £59.99 per year for one device, providing network protection at the router level and alerting users about compromised services.