Better in whch way?
Capability of detecting actual known viruses? - capability of detecting unknown virus types? - Ease of use? - Speed of operation? - Efficiency and speed of updating? - Responses to problems from support?
There's so many factors which make a good AV. Most AV programs these days will make a reasnably good job of detectng current actual known viruses. It's the other things that make a difference.
For the very model of a good AV click here NOD32.
For solid testing from a responsible body click here