I would choose both, they are both different products I feel, as they have taken a different route in how they protect the system, one has good BB, other has advanced HIPS, one has a dual-engine anti-malware , other uses 2 engines optionally as well, then come features like sandbox, registry protection, boot time protection, file modification behaviour.It's upto the user, remember no security is perfect, the cat and mouse game keeps going on and on, if a user feels comfortable with his overall security which includes safe habits and common sense as well, then dont worry about advanced things like zero day, etc unless you live in Fort Knox.