i have used sooo many antivirus programz n internet securities. with experience i can tell u that it doesnt worth installing an internet security for your protection if u r a using the internet for home use only. if it's business then internet securities like KIS, BD, Norton etc work. Basically all these famous antivirus solutions are good. People say 1 is better than the other but generally they can all do a fair job. but the case with most solutionz z dat they take up a lot of RAM n make ur computer slow, i have noticed that with all two internet securities that i have used so far (KIS n NORTON). As for KIS, i liked it very much but the fact that i have to search the net for good working keys every now and then when they get blacklisted made me uninstall it n go for a free solution.
That's why i am soo happy with my free antivirus, Avira Antivir. I think it;s a great antivirus. it has awesome detection rates (almost as good as KIS n BD) n it offers extra protection against ROOTKITS, n PHISHING despite the fact that it comes for free. i still cant figure out the reason they give this fantastic software for free.
Anyways I love it. for my protection against spyware n hackers, i use Ad-aware 2007 which is a crack version but works good. it's very reliable.
I think my two choices are wise n i almost forgot to mention that my computer's speed as doubled since the day i removed my KIS.