I have tested

1)Panda Titanium 2005
2)Mac Afee Security 2005
3)Norton Internet Security 2005
4)Zonealarm Security (latest version)
5)Avast antivirus (latest version)

1) Panda is very good but it's activation and upgrade system SUCKS also it has problems with latest Windows Xp SP2

2)That is what i am using now it's the most friendly security for all my programs, Mac afee it's very good and it's eats less memory from NAV

3)It's solid security but eats too much memory, plus somehow it's unstable in certain situations, really made me angry so i definitely stay away from it from now one

4)Great but it's firewall has some compatibility problems in certain sites
I had to use refresh just to download a page correctly

5) AV is Pretty good but somehow some pages are not played correctly
plus it does not have a firewall sollution