NOD32 is an excellent antivirus but there are some issues.
-updates sometimes freeze or just stop
-product is not updated on weekends!
-many trojans are not considered malware by NOD32
-comprehensive but convoluted interface
Simply the best antivirus there is.
-highest detection rate
-great spyware and malware detection too
-frequent small updates
-very low resource usage - yes, even lower than NOD32
-simple and attractive interface