Can someone please give me some specifics on why certain AV and firewall programs are recommended instead of others? For example, a couple years ago this site recommended AVG and ZoneAlarm, which I have used since. Now I am usually told to use Avira/Avast and Comodo whenever I post here. I'm wondering why the change? I assume that there is no sponsoring with any of these companies and that there are real reasons why AVG and ZA are no longer considered adequate? I'm curious as to what thore reasons are. I replaced AVG and ZA on an older computer with Avira and Comodo, and they do not appear to be problematic. But going through the process of removing old programs (particularly AVG) is a pain in the a**, so I'm wondering why TS has changed its recommendations. I will do it on my laptop if it will make a big difference, but I have not noticed any difference with speed, etc. with Avira/Comodo on my old computer, so I wonder if it is really worth the hassle. Are there significant reasons that I should make the change? Thanks!