Actually TALK TO THEM on the phone and/or in person, find out about their situation, and if they seem like a good fit, basically just be smart about it, and have human interactions with them, it's that simple. 

This interaction also allows one to gauge the sponsor's communication skills and professionalism.10 Questions for the First Call1) What's the Sponsor's investment thesis?

Cultivate relationships where referrals become a natural part of your interactions.

The true test of a company is how they interact & stay engaged to resolve those issues, which we always try to do to the best of our ability! 

@Andres Rodriguez and @Srikant Puvvada Southern Impression Homes is a pretty reputable group from what I've heard, but I haven't interacted with them myself.

Again, the BiggerPockets store has some books on this topic, or you can learn about it by watching podcasts, reading blogs, and interacting on the forum.

Property managers still have to be managed, so they don’t alleviate your interaction with your properties.  

Could probably share an outside view of this interaction, but you have to address these situations head on or they will take over your property.Recent D story you can google is Western Manor Apartments in Dayton, OH. 15-16 years ago the property was a war zone!!!

What questions should I be asking a note seller/buyer during the interactions until the closing.

Happy and excited to interact with this community!