I think it's a very wise choice i recommended it but i have to warn you that some people, i don't know why though, think it has a confusing interface... I've also heard that their online support isn't all that good. However, I still use it just fine and i have never had any problem with it. ZoneAlarm does not detect NOD32 as an antivirus system... I don't know why though.
NOD32 is fast, updates rapidly and frequently, takes up VERY LITTLE RAM. I fully recommend you use it.