I've been using for many years G Data. Initially as a pure antivirus program later. As a complete program with Firewall, Backup and Cleaner I am very pleased with the features which gives me the Program. Feeling safe on the road and by no means slowed down if G Data runs in the background. Even a not so dewy laptop makes G Data what it should be able to protect and not slow down the system. Misreporting I have virtually not at all by the firewall or virus scanner. And when the problem will within the next Aufspielung the new virus signatures. The latter are automatically every hour or who can not wait to be playing manually. To what extent this makes sense or whether in fact what is being updated is visible to the user traffic on only briefly generated. Sense does it in as long as the feel good you have if you are traveling on the net.
Well, I find the offer that I can protect 3 PCs with a purchase. Of course there's also the single license which also exactly from installation, a year runs and must be renewed thereafter. For me, for years a good investment.
Clearly has for the antivirus program that convinced him each his preference. For me it is G Data.