I personally love its capability to automatically and accurately detect vulnerabilities. So, I would say it is the Burp scanner that is THE most powerful, valuable, and an awesome feature.
PortSwigger Burp Suite Professional excels in vulnerability detection using its robust Burp scanner and Intruder tool. Users value its minimized false positives and enhanced functionality via plugins, though improvements in API security testing are needed. Comprehensive testing models support swift vulnerability assessments, despite challenges with report quality and setup complexity. Pricing is considered high, lacking local options, and better documentation is requested. Automation aids efficiency, yet integration with tools like Jenkins requires enhancement.