Return to Self Management of 73 units?

[Helen Bollinger]

We have 73 units in B to C- areas all in a small geographical location.  We used to self manage 7 years ago and have been thru 3 different PM companies since.  We're now debating on going back to doing it ourselves.  During these 7 years though, there are lots of new companies and resources to make landlording easy, however, not all of these transfer well to such a large portfolio (I hear).  Do you have any software or resource tips that I should be researching to use for 73 units?  Does Cozy work ok for that many units?  How about Latchel?  Anything else out there since I've stepped away from the mgmt scene to help streamline our operations?  TIA! :)