kav is rated by public opinion as being better than ca definations.
za uses ca defs.
"Kaspersky Internet Security 6 provides thorough protection against online threats, but ZoneAlarm Internet Security Suite 6 remains a better buy."
read the editors review at download.com
click *reviews.cnet.com/Kaspersky_In...ml?tag=nl.e757
which is the best 'internet security suite' ? zone alarm security suite : says this review of pcmag.
"Just when we thought ZoneAlarm's firewall had reached its peak, Zone Labs has found a way to make it even better, increasing its power against spyware and leak-test malware techniques. Its program control is more flexible than ever, with different levels of trust and the ability to kill the worst programs instantly. The combination of kernel-level firewall techniques and signature-based spyware recognition already offers unusually powerful spyware blocking and decent removal. Overall, the next version of ZoneAlarm looks to be a superb security suite".
*www.pcmag.com/article2/0,1895,1836243,00.asp