? anti virus ?

Win98 SE Norton anti-virus 2003 Not to satisified to date and they are looking for me to upgrade. Website doesnot package some of the perks offered to XP users as 98 users. Phone is ridiculus (spelling?). Tells me it wants me to get a number from the website before it answers my call. Had many problems this year, norton missed many viruses. had help with advice on cleaning the computer, still some quirks. But first things first…before cleaning some other nasties I'd like a better AV. Been looking around have some thoughts about NOD32,Shield,Bit Defender,Kaspersky. All advice appreciated.

AVG would be my choice- free and also not heavy on system resources.