ZoomInfo

I've been using Zoominfo for over a year now to find manufacturing companies. I find the revenue estimates to be a bit low. Phone numbers are accurate about 90 percent of the time based on wrong number statistics from a cold calling company I am using. I recall talking with a startup recently that was people that had left Zoominfo. They were offering a much lower price, but had not yet created the features of Zoominfo. 3 questions. What is your experience with Zoominfo? Does anyone know the startup I talked with and its name? What alternatives are you using?