New to Norton. Questions!!!!

Hi, 

I am new to Norton 2010 Internet Security. I have had the software for almost a year now. Seems to be working great and has blocked certain trojans from downloads I thought were safe. I am just curious about a few things. When I google best antivirus software, it seems to show Kasperksy as better than Norton. I suppose there will be a bias opinion on these forums but I would like an insight on what Norton technologies will make 2011 version superior to other AV software as I am evaluating to stick with Norton or move on to Kaspersky or even Bitdefender. Kaspersky addresses they use superior technologies to fight off threats and  I would like the best for my system.

 

Does Norton 2011 incoporate Quorom? and SONAR 3? or are they the same thing? Just slightly confused. 

Thank you.