This depends on you and your money to invest, personally have tried most of them, Avira, Norton, but were not good for me. I have bought Avast antivirus and in my opinion, this one is the best, I have received the best protection to my PC, but for the best protection, you must upgrade your account!
All suggestions here that is not 360 security are terrible. I had tried all Anti-virus in existence and only 360 security is the one that doesn't slow down my pc and doesn't have a scandal. 360 security will not all save you money because it's free and multipurpose it is also very lighweight. Do not use Avira,AVG,Mcaffe, Malwarebytes and other popular overrated mainstream anti-virus.
