Best Property Managers?

[Shane Benner]

I am considering starting a property management company and was interested in your feedback.  More specifically, do you use a property manager and if so what are the qualities that make them valuable to you and your business?  What could they do better? Any thoughts, names and contact info. of property management that you feel like are doing it well and adding value would be much appreciated for me to learn from as I gain insight - thanks for any help, much appreciated.

Shane