Neither?
Bitdefender has a great AV, but nothing else appealing for a paid suite. Bitdefender's Free Antivirus, lacks a lot of options. Bitdefender Trafficlight is no longer supported for Internet Explorer.
Comodo mostly known for it's Defense+. Their AV feels like a plain sheet of A4 paper, their Whitelist isn't all trustworthy, few FP in sandboxing legitimate programs and too much extra bloat in the package (ie. GeekBuddy, Dragon). Finally, correct me if I'm wrong but Virtual Kiosk requires Microsoft Silverlight for the fancy UI?
Judged on Standard installations.