Well in my experience AVG Generally sucks balls. I Worked at a PC shop for a while and if you know malware you know that no anti virus can ever entirely protect you.
I find pretty much any Free Anti Virus, preferably Avast, Avira, w/e aren't to bad. HOWEVER for true Protection I HIGHLY recommend the BEST Malware Protection ever. And I'm not just hyping this up. It is seriously one of the best Malware Protection's around. And Honestly I've yet to see any thing come close to comparing to its awesome power.
MalwareBytes
It's not really an Anti Virus But scans for Malware Better then (not going to lie) pretty much any Anti Virus.
Also if you pay for Anti Virus software you're an idiot sorry. Norton sucks.
NOW I am a Malwarebytes Affiliate BUT ONLY because I love there product I wouldn't Affiliate with something I didn't believe in.
So if you'd like to buy the PAID Version of Malwarebytes:
https://store.malwarebytes.org/342/?affiliate=2169&cart=29945&scope=cart (https://store.malwarebytes.org/342/?affiliate=2169&cart=29945&scope=cart)
Also the free version will Scan and FIND ALL MALWARE but the paid version just gives you active protection and IP blocking.
Heres my write Up:
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Malwarebytes' Anti-Malware Full Version For Only $25 Dollars!
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Malwarebytes' Anti-Malware
Malwarebytes' Anti-Malware is an anti-malware application that can thoroughly remove even the most advanced malware. It includes a number of features, including a built in protection monitor that blocks malicious processes before they even start.
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Malwarebytes' Anti-Malware monitors every process and stops malicious processes before they even start. The Realtime Protection Module uses our advanced heuristic scanning technology which monitors your system to keep it safe and secure. In addition, we have implemented a threats center which will allow you to keep up to date with the latest malware threats.
Malwarebytes' Anti-Malware is considered to be the next step in the detection and removal of malware. We compiled a number of new technologies that are designed to quickly detect, destroy, and prevent malware. Malwarebytes' Anti-Malware can detect and remove malware that even the most well-known Anti-Virus and Anti-Malware applications on the market today cannot.
Key Features:
• Support for Windows 2000, XP, and Vista (32-bit and 64-bit).
• Light speed quick scanning.
• Ability to perform full scans for all drives.
• Malwarebytes' Anti-Malware Protection Module. (requires registration)
• Database updates released daily.
• Quarantine to hold threats and restore them at your convenience.
• Ignore list for both the scanner and Protection Module.
• Settings to enhance your Malwarebytes' Anti-Malware performance.
• A small list of extra utilities to help remove malware manually.
• Multi-lingual support.
• Works together with other anti-malware utilities.
• Command line support for quick scanning.
• Context menu integration to scan files on demand.
• Compatible with: Windows 2000, XP, Vista, Win7 (32/64-bit)
• Multilingual: English, Spanish, Chinese, Dutch, French, German, Italian, Portuguese, Russian, etc.
CNET Editor's review of Malwarebytes Anti-Malware :
Malwarebytes Anti-Malware is a surprisingly effective freeware antimalware tool. It's a relatively speedy malware remover, with the quick scan taking about 8 minutes even with other high-resource programs running. The heuristics engine proved on multiple computers during empirical testing that it was capable of determining the difference between false positives and dangerous apps.
The app has some nice features rolled in, too. It supports multiple drive scanning including networked drives, context menu options including a scan-on-demand for individual files, and the FileAssassin option under the More Tools section for removing locked files. The interface is simple, but pleasant-looking and well-organized. Tabs live just below the oversized logo, with few options per tab to keep down the clutter. The installation process was fast enough, but interestingly offered up the well-kept changelog and an instant definition file update.
Do note that the real-time protection is restricted to the paid version, as is the scheduler for updates and scans. Overall, though, Malwarebytes Anti-Malware is a responsive malware remover that does what it should with a minimum of fuss
Hope that settles the Anti Virus war for you :P