Bitdefender is the clear winner if you are looking for an antivirus solution with high malware detection rates, with minimal impact on system performance as well as reasonable cost. It also has distinct features, including shredders for your files, as well as a webcam/microphone blocker that blocks any suspicious requests.
Another key aspect is the ease to use your antivirus. Both Avast and Bitdefender are fairly easy to navigate, but we discovered that Bitdefender was a bit more difficult when it came to running scans. It took us a while to locate the settings, and it was difficult to set up a complete or boot-time scan.
Bitdefender’s support is vastly superior to Avast. Its customer support phone line is able to speak an array of languages, and its knowledge base is vast. Avast however, restricts its support options to paid customers and relies heavily on its forums and knowledge base.