What security setup do you have?

1)Avira Premium

2) Zone Alarm firewall (with Windows firewall disabled)

3) MBAM (PRO)--->Malwarebytesantimalware

4)SAS (PRO)------->Superantispyware

5)WinPartol Plus

6)sandboxie

7)Spyware blaster

8)Webroot spy sweeper(bought)

9) Hitman pro

Hardware firewall - Linksys router

Realtime:
Look 'n' Stop Firewall v2.07
DefenseWall HIPS v3.10
WinPatrol 2011 with registry list for UAC enabled (Wilders Security Forums - View Single Post - WinPatrol Registry Protection list for Windows Vista/7) loaded

~Additionally~
UAC/SEHOP/DEP/EMET (for Internet facing applications)

On-demand:
Hitman Pro
ShadowProtect Desktop v4.0.5
SyncToy 2.1

Web browser:
IE9 (no third party cookies; geolocation option disabled in Settings)

Router:
-TP-Link TL-WR340G 54M Wireless Router (SPI Firewall)
OS:
-Windows 7 Ultimate 32-Bit
User Account Control:
-Enabled (Default Level)
USB/DVD Drives Autorun:
-Disabled
Windows Firewall:
-Disabled
Windows Defender:
-Disabled
Administrator Account
Enhanced Mitigation Experience Toolkit (EMET) 2.0.3:
All Internet facing applications + Microsoft Office
Norton DNS

Real-time / On-access:
-DefenseWall Personal Firewall/HIPS 3.11 BETA
-WinPatrol Plus 20.0.2011.2 (with Creer's Registry Protection List)

On-demand:
-Malwarebytes' Anti-Malware
-SUPERAntiSpyware
-Hitman Pro
-Emsisoft Emergency Kit
-Panda USB Vaccine
-USB Disk Security

Mozilla Firefox 4.0:
-Adblock Plus (EasyList+EasyPrivacy+Malware Domains)
-NoScript
-WOT

Google Chrome 12.0.712.0:
-"--safe-plugins" Switch
-Adblock Plus (EasyList+EasyPrivacy+Malware Domains)
-Web of Trust
-FlashBlock

Internet Explorer 9:
-Drive-By Protection via 1806 Trick
-Abine TPL
-PrivacyChoice TPL
-EasyList+EasyPrivacy TPL
-ActiveX Filtering
-Protected Mode

Backup/Snapshot:
-Acronis True Image Home 2011
-HorizonDataSys Rollback Rx

I started using Norton since few days and it seems to be very light weight. Using just 11MB RAM during idle. Almost similar to Avast's RAM usage.

Using NIS? I was using it before some time,and it's great.