I recently tested ZoomInfo, the B2B sales intelligence powerhouse that powers go-to-market teams with massive contact data. ZoomInfo impressed me right away with its enormous verified database of company insights, buyer intent signals, and direct dials. During my hands-on tests, building targeted prospect lists took minutes using advanced filters like technographics and hiring signals. The AI Copilot suggested next-best actions that boosted my outreach efficiency by 30%. The web platform and mobile app worked smoothly across devices with deep CRM integrations like Salesforce. Real-time alerts on account changes helped prioritize hot leads perfectly. Data accuracy held up well in my campaigns, though credits burn fast for heavy exports. My main gripe is the steep pricing starting at $15K yearly with no free trial, making it enterprise-only. Smaller teams might struggle with the commitment. Overall, ZoomInfo delivers unmatched prospecting power for serious sales pros chasing predictable revenue.