Hope this is an easy question....have used Norton Internet security for years and the subscription is up and wondering if i should change? if so what is the best software to go with...Kaspersky, Bitdefender, AVG, Zone Alarm..or what? Have heard that Norton can be a system hog...when i check reviews, different sites have different reviews so it can be hard to choose. Have always used the programs i found by reading these forums to keep my machine running good...so thanks for the help.drivermwm