Personally, I feel no AV is excellent, a few are OK and people really need a strong plan of software, patching, and good practices to stay virus free..
nod is very good have been virus free for 5 yrs,updates daily plus it has been cracked(what has'nt)and its not a resourse hog,you wont even know its there
p.s. its out there for free(warez) dont know why anyone pays for software nowadays