I just hope avast 5 with it's new heuristic technology can outperform all the other anti-viruses and be as good as gdata as they both use the same engine and become the best anti-virus program.
I'll give Avira credit as I know they did have 21 false positives but I just read the whole article and there heuristic was set to high and they would normally with other anti-virus programs like TF would require to set it to medium as to minimizes it's false positives.
But I support any free anti-virus software like avast, avira, avg as I know a lot of other country and people that don't have enough money to buy anti-virus software as well as other computer software.