List Source Criteria for Direct Mail Campaign?

[Drew Wiard]

All,

I am a relatively experienced investor (several rentals, flips, seller financing, etc...).  Very interested in notes.  Donna Bauer's program has helped with the nuts and bolts, but as I begin to work out the details of my direct mail campaign, I am curious how many folks have purchased their lists via List Source?   ...and if not List Source, where else?

I'm MOSTLY curious to know what criteria you might be using to set up your lists.  

Thanks in advance for your feedback!