I agree. ESET Nod32 is the best I've found. Light weight. Trouble free. Works like it should.
Quote from opt789:
Just signed up for another 2 years with ESET Nod32 Antivirus, and I had zero problems on two computers for the last two years. It is not free but it is not much to pay for a program that does everything I need it to without getting in the way or taking too many resources. On one of my computers I donât even try to be careful when I am surfing and clicking on links and I have never had a problem so far.