Which list should I start with for direct mail?

[Sultan Maawali]

so I am planning to start my direct mail campaign soon, I'm thinking of targeting absentee owners, pre-foreclosure and probate. I want to focus at 1 of them at a time. Which one do you suggest me to start with? And do you guys know a good source for lists you guys tried that is cheap and updated? This is going to be my first direct mail campaign. I would appreciate any other help and advice.