C Class Tenats - Experiences and challenges?

[Lois Ginter]

Been having some talks with a friend who managed C and D class properties.  This friend's perspective on these tenants is that while most are decent, there are a lot of limitations dealing with them.  

His take is that these type of tenants won't understand and sign a lease that has too many occupancy expectations, and they won't apply for apartments, and pay rent on line.  My position is that having clear expectations demonstrates that I want to maintain a clean and respectful environment, and that online applications weed out the lower functioning tenants. 

What has been your experiences dealing with C Class tenants?  What are the special challenges you have with this demographic?