Is anyone using a Predictive Lead Scoring tool?

Hello,

Does anyone have experience with a predictive lead scoring platform? I'm looking at Infer and Madkudu - leaning more towards Madkudu. I'm curious if anyone has used any of these platforms or similar tools for predictive lead scoring and can share your learnings and insights.

I have concerns about our database hygiene and the reps keep assuring me that they have enough third party data to still make it work, but our first party data is kind of a mess and I'm not fully confident we'll get the results we're hoping for because of it.