what are your favorite most effective ones? over the past 9 years or so ive tried many and i am using norton 360 due to my isp providing it for free. it has a firewall also, but it misses alot of trojans / malware. on top of that i run weekly scans with ad-aware, superantispyware, malewarebytes.. Any suggestions on something better than norton? i know the top one changes all the time.