Looking for a good CRM for tracking Wholesaling Leads

[Arthur Cook]

I'm looking for a good CRM for tracking Wholesaling Leads. 

I'm using a list of NODs and door knocking to generate leads. Since it is a long process and usually requires multiple interactions and visits, I realize I need a good system to track each lead and my interactions with them. 

Does anyone have any CRM recommendations that they think could provide this sort of service well?

Thanks!!