Does anyone have a particular contact they can go to for info? 

In my opinion, both have their pros and cons and neither is 100% superior to the other.

I currently self-manage three properties in the Atlanta metro area and have learned a ton through trial and error over the years.

Pick a screening platform/application that makes sense for you.As for meeting the applicants, I recommend meeting them at the property to show the place to them rather than getting coffee or food with them.

They accepted the offer even to the surprise of the listing agent. 

@William J Anderson with anything, you'll probably want a summary/overview report and then another for a deep dive as needed.You'll want the summary report to be your go-to, preferrably showing month-by-month for comparison purposes. 

I am new here just trying to learn and gain knowledge to start buying my own rentals 

DSCR is going to be your best bet here.

my SS deal is one of my participation deals were I provide the capital to the operator via a debt instrument then take a participation as part of the note agreement. 

I just wanted is sue a warning against one such company - due to the egregious manner in which he exercised his predatory practices  - in the guise of a legitimate company!!