i think bitdefender antivirus is on of the best; and used to use bitdefender pro 8.
i also tried the bitdefender security suite 9, for a week. i found the anti-spy and parental control a little wanting. in fact, if i remember correctly, u have to add or import the bad-sites-list ! it doznt have one inbuilt like zass. so though iid rate it (bdis 9) a good one; i now instead prefer to use zonealarm internet security.