The question is how many are "too many".
I think that multiple warning popups (requiring your ok) are a small price to pay for better protection and all aps will pick up some others may miss.
I use Windows Defender and Spybot, both realtime protection.
Also, I would recommend installing them for all users. What good is an ap designed to protect your system that you have turned off?
Edited by Enthusiast, 10 March 2006 - 11:34 AM.