I've noticed with AVG you will get two sides of the story with this AV product. Some will say its rubbish and some will swear by it and infact I've heard people say its better than NOD32, also its probably the most popular free AV software out there today on the market, and again I've heard that people have said that the free version of Avast is better than that of AVG. So my Q here is: 1. Is there much of a diff between the free and pro paid version. 2. Is there a diff re their detection rates. 3. Does the paid/pro version offer faster scanning. 4. Does the paid version offer better heuristics. 5. Does the pro version offer better detection and if so by how much.