What vulnerability scanners do you use?

[Spooter]

I know Microsoft Baseline Security Analyser is good for service packs, critical patches and windows misconfigurations. However this lacks advanced windows settings, drivers, non-Microsoft software (Adobe, Chrome, Firefox, Java, etc...) and network-specific vulnerabilities.

Something such as OpenVas, GFI LanGuard or Retina for example.

Interested to know what others are using if any?