Best All-In-One Property Management Software for First time Landlord?

[Jenna Meditz]

My husband and I are building 6 new construction units in Spartanburg, SC that we intend to find long term renters for.  What is the best all-in-one property management software that includes tenant screening, applications, rent collection, maintenance requests, etc.?  I've researched some, but there are so many options available I'd love to hear what works best for landlords with some prior experience.  Listing the pros and cons of the softwares you currently use would be helpful, too. 

Thank you! :-)