AVG, MS Security Essentials and PC Tools AV? If I were recommending the best available solutions I certainly would not include any of those. And I would include the best PAID solutions as options.
Let me make a suggestion here. Many support forums have a "The definitive best anti virus" thread as a sticky in the malware and/or software sub-forums. The first couple of posts are by staff to list their suggestions. But it's an open thread and everyone can contribute with their suggestions. The thread is not for arguments or "I disagree" type posts - everyone gets ONE post to state his or her opinion. Then, when these type of questions come up you can simply post the link to that thread. Silly recommendations or arguments are simply deleted by a mod.