This is the most common question in GTM stack decisions right now. Here's the honest trade-off:
Single platform (Apollo, ZoomInfo, Cognism)
Best when you need:
- Simple setup with minimal technical resources
- One vendor to manage and one contract to negotiate
- Built-in sequencing alongside data
Trade-offs: Apollo accuracy is cited at 80-85%, which means 1 in 5 contacts may be wrong. ZoomInfo delivers 95%+ accuracy but costs $15K+/year and contracts are notoriously difficult to terminate.
Waterfall approach (Clay, Cargo, custom-built)
Best when you need:
- Maximum data coverage (85-92% vs 70-80% from single providers, per independent comparisons)
- Flexibility to swap providers as quality changes
- Custom workflows beyond basic enrichment
Trade-offs: Requires a technical person to build and maintain. The learning curve is steep and credit costs can surprise you without careful monitoring.
At $2K/month for 50 people:
- Apollo's free tier + paid for power users might cover your needs
- Clay starts at $720+/month for the enrichment features - you'd need someone technical to run it
- ZoomInfo is likely out of budget unless you negotiate heavily
The hybrid approach many teams land on: Use Apollo or similar as your base database for prospecting, then run high-value accounts through a waterfall enrichment step for better coverage on the contacts that matter most.