Bitdefender is the best choice if you are looking for an antivirus solution that has high rate of detection of malware and has minimal impact on performance of your system in addition to affordable cost. It also offers some unique features such as microphone and camera protection, which denies any suspicious requests to your camera or microphone.
Another important aspect is how easy it is to use your antivirus. Both Avast and Bitdefender are easy to use, however we found that Bitdefender was a bit more difficult to navigate when it comes to running scans. It took us longer to find the settings we needed and setting up a full scan or a boot-time scan was somewhat difficult.
As for support, Bitdefender’s support is far superior to Avast’s. Its knowledge base as well as phone support are extensive. Avast however, is able to limit its contact options to customers with paid accounts and heavily relies on its knowledge base and forums.