It seemed the most common reason for the numerous repair invoices was the managements lack of involvement with the property and tenants. 

Some of the most glaring problems are the fact that calls will routinely ring for 60 seconds or longer before being answered (they claimed several weeks ago to have solved this issue but I have told them numerous times since that I can clearly see through CallRail that they have not), there is a complete lack of consistency in the questions asked and information provided, there are errors scheduling appointments, their phone reps routinely lie directly to the callers claiming that they live in the local area but have only recently moved there so they don't know any landmarks (this is after I have made it explicitly clear to Call Porter that they are not to do this but rather be honest with the callers that they are not local but the owner of the business is), phone reps don't bother gauging the seller's motivation or equity prior to setting up appointments, and a multitude of other issues.

They pay rent on time but we've had numerous complaints from neighbors about them using bad language, being disruptive, and threatening.

Do some research on this site, and you will find some companies that are much more reputable, and don't have numerous outstanding lawsuits like the ones you mentioned. 

@Brandon Cortes - There are numerous ways to find debt and get a deal done.

Lots of projects die in Detroit for numerous reasons.

Our journey took numerous twists and turns as we tried to figure this out, but one thing we didn't do was give up.

As I have read numerous times from long time investors, there is nothing as comforting as paid off properties.

AirBnB is officially not allowed for numerous reasons.

Aside from the books mentioned by others, there are numerous articles on this very site explaining how to get into multi-family, and the basics of syndication.