Nessus if pretty much turn-key for vulnerability scanning. Once it is set up and configured, automatic updates help to easily identify new vulnerabilities for both credentialed and uncredentialed assets.
The UI is fairly simple and intuitive, and easy to learn for new staff who are not familiar with the product yet.
It is also priced appropriately for a vulnerability scanning solution of its caliber.
Tenable Vulnerability Management is a solid choice for centralized scan management, with accurate plugins, an intuitive interface, and clear risk prioritization.
The platform is easy to navigate even for non-experts, thanks to clearly labeled sections for scans, reports, and sensors.
Historical scans are stored in one place and can be organized into custom folders, which makes it easier to keep everything structured and find what you need later.