....i don't want to use Microsoft Security Essentials because it's crap. ...
You are right about that.
But don't make your AV decision based upon one AV testing source. There are several out there with free evaluation/testing reports. To me the bottom line is the testing criteria and scoring itself, the threats detected and blocked/neutralized. Second is false positives. But others want ease of use, cost, other bells&whistles. Kaspersky has a history of accuracy and reliability ... so do several others.
Thanks for your review. You are correct, unacceptable performance slowdowns, even intermittent ones form an AV app is a deal killer. I hope it uninstalled readily and completely. I hope ZoneAlarm deals with the problem.