I have found that those with the proper knowledge in how the software works, and of course know how to use the software, would agree with your post, including myself! 

I do all of the work except for contract review by broker and they pay for the pm software and overhead of having a physical location for the brokerage (although rents collected and owner payments are all done online).

It may be a situation where you need to either learn more accounting or hire this task out.No other software is going to help you as the same mistakes you made in QuickBooks will be the same mistakes you make in any other software.  

What software should I look into? 

But ya know who DOES.... ya know who IS in a position to be influenced and "bought", because there is another candidate in this thing who's not only VERY susceptible to such but tied at the hip to a person who's SOOOOO tied up in bribery and pay-off's that the #1 problem is actually solidifying the evidence because he's so damn practiced at it that even when it's glaringly OBVIOUS to all he still finagles ways to hide it all. 

That's always your friend when you can't find a software to accomplish what you need.As you're scaling your portfolio, it pays to scale in 1 or just a few areas so you can have all properties with the same utility companies, management, etc.

I’ve been using RentRedi for a couple years and found the software to be quite helpful.

I'm currently exploring software options to support our Acquisitions Department and would appreciate some recommendations.

It can’t be that Expedia has any influence at BP.

But we have a handful of MTR and there is no data software..