It is difficult to say... It depends on the user and the PC.If the user is very PC knowledgeable I would recommend something like Kaspersky, if the user want's "Set it and forget it" protection I would go with Comodo.If the user doesn't mind paying money I would go with Avast... It is very hard to say one product is better than the other as they all have their pros and cons and it really depends on the situation.My personal favourite product that I always use is Bitdefender or Comodo.