Bitdefender is the most reliable choice if are looking for an antivirus solution that has excellent rate of detection of malware and has minimal impact on the performance of your system as well as reasonable cost. It also has some unique features http://www.copperbellmedia.com/technology/bitdefender-vs-avast/ like webcam and microphone protection, which blocks any suspicious requests to your microphone or camera.
The ease of use of antivirus software is an important aspect. Both Avast and Bitdefender are fairly straightforward to navigate, but we found that Bitdefender was a little more clunky when it came to running scans. It took us longer to find the settings we needed to set up the full scan or boot-time scan was a little difficult.
As for support, Bitdefender’s customer support is more impressive than Avast’s. Its knowledge base and phone support are extensive. Avast however, restricts its contact options to customers who pay and heavily relies on its knowledge base and forums.