Hi;
For commercial choices I have tried both Norton & McAffee, my preference is Norton just seemed easier to use, the latest editions though don`t seem as good.
On two of my PC`s I now use AVG free, its fast slick and free and I have never been caught out with a virus, must remeber to donate some bucs to those guys or buy the commercial version, how much better is it than the freebie?
So if your looking for FREE and SAFE then you can`t go wrong with AVG!!!
That`s my twopenth worth (Old English Saying).