The coverage question nobody asks
Contact databases are built from business signals: corporate email domains, LinkedIn profiles, filings, web technology footprints. A plumbing firm run by two people with a Gmail address and no website emits almost none of those signals. It exists, it turns over real money, and it is effectively invisible to that model. Map data has the opposite bias — the business claimed its own listing because customers find it there.
So the comparison is less about features and more about which businesses each system can see at all. If your buyer list is businesses without a website, a database keyed on corporate web presence is structurally the wrong instrument.
What you give up
Honestly: emails and named contacts. FindLeadly returns the business, not the person, and no email address. For local outreach this matters less than it sounds — you are calling the number on the listing and asking for the owner, who is usually the person who answers. For an enterprise sequence into a named buying committee, it matters a great deal, and ZoomInfo is the better fit.
Cost per useful record
The right measure is not price per row, it is price per row you would actually contact. A hundred thousand corporate contacts is not useful to an agency selling websites in one metro area; forty local firms with no site is. Starting free and paying $20/mo when the volume justifies it keeps that ratio sane while you find out whether the channel works.