Windows Defender highlights:

• Provides robust protection from most types of malware
• Has a built-in firewall
• Phishing protection for IE and Edge browsers
• Parental control feature is available.
• Comes pre-installed in Windows OS; protection is enabled by default.

TotalAV highlights:

• This antivirus is compatible with the most popular platforms
• TotalAV offers a standard 30-day money-back guarantee
• For the 1st year you get more than $80 discount 
• As far as the most intuitive antiviruses go, this one is on top of the pedestal