I have been running Bitdefender Total Security for many years now alongside Malwarebytes with no quibbles between them. Bitdefender has improved immensely over the past few years with its capability and covert operation. I have recently ditched MWB as Bitdefender was always the first to jump on something and MWB ran clean after. Bitdefender was always installed before installing MWB .
For anyone interested in the paid versions, which in my opinion are worth their salt at the right price, going straight to the source will always cost you much more. Anti-Virus4U.com sells subscriptions for a number of brands and include family packs, 1 to 3 years, 3-10 devices including PC, Android, tablets phones, etc. for a fraction of what you would pay through the brand direct.
With Bitdefender, a purchase through Anti-Virus4U will take you to Bitdefender’s checkout direct. The only catch is they seem to force you into an ongoing automatic renewal agreement with the next offer at full retail price. As long as you remember to log into PayPal and disable this renewal this won’t be a problem. Also remember to renew through Anti-Virus4U and not the brand. 5 extra devices (total of 10) added after sale to my subscription cost me AU$10 for the 2 years so the family’s phones, laptops and tablets are all covered under the one subscription. Bitdefender Central allows you to log into your account from any computer and manage any device on your subscription, even parental controls for your kids devices.
I have thrown some curly stuff at my PC and delved into unsafe net territory yet Bitdefender TS has grabbed every threat by the throat. I have full trust in it now.