nod32 and kaspersky are the best available, i personally have nod32 after using kaspersky for few years. the reason i moved to nod32 was i couldn't find vaild key for either of the 3 versions (07-10)
avg is my favourite, bitdefender is good but lacking the option of ignoring files (sometimes keygens/cracks come up as virus), nod32, eset, kaspersky, even norton has apparently got very good in their new version
Is an all in one type thing, but have found it works well so far.
Is less resource hungry than nod/kaspersky/norton etc and is free :D
If not then AVG is ok, along with Spybot S&D or Malware-Bytes.
good anti virus + doesn't cause lagg
rly happy about it :D
smth with proactive
with vista fw OS feels light and haven't got any viruses on my comp so i like.
or comodo internet security