"NOT incompatible with ZoneAlarm, works fine"4.5 starson by the_spen
Pros: The industry standard for decades. Nearly free with rebates.
Cons: Have to do the rebates.
Summary: NORTON ANTIVIRUS 2007 IS *NOT* INCOMPATIBLE WITH ZONEALARM. All these naysayers just aren't trying it. YES, the installer warns you that you have to uninstall ZoneAlarm. But after you install NAV you can just reinstall ZoneAlarm, and both products are working fine so far.
I've used NortonAntivirus on and off for years. McAfee caused my DVD drive not to work until I uninstalled it. NAV 2006 was trouble-free for me, and when my subscription expired recently I got the NAV2007/Ghost bundle from BestBuy for FREE: $70 and $70 in rebates. Just had to pay tax.