Which software or company should I use for multi-family leads?

[Darrell Bratton]

I am looking to start a marketing campaign as I cannot get the county information online. I invest out of state so I want to get a list of multi-family owners from 2 to 6  units in a county. I just saw Reonomy mentioned in a post, but what would you recommend? Are their prices reasonable? How can I vet the various companies before I spend money to see if they can produce results? I am in a small town market.

Darrell