Every system you try will have flaws, or you may salivate over a feature that appears in other software.Some familiar names are mentioned frequently: Stessa, Apartments.com, RentRedi, TenantCloud, Innago, RentManager, Avail, Rentec Direct, Doorloop, etc.I recommend conducting thorough research on each app online to understand their offerings, pricing, etc.

If the pwnership frequently changes perhaps the property doesnot live up to expectations so the owner dumps it to some other sucker, I mean owner. 

Like in a high-stakes bank robbery film, only this time you're negotiating the exciting and frequently unpredictable world of real estate financing rather than robbing a bank.

I think a separation based on real estate market characteristics is more useful than a geographical one.

Living in the area of my rentals, self managing, being onsite frequently, able to do repairs cheaply by doing them myself or having employees do them, owning in a relatively landlord friendly area, etc.

After that, I'm told that The closing must be attended in person, so I guess you'd  better sign a power of attorney over to a family member or friend you trust or,  get your frequent flyer miles up.

Also if you are looking OOS 20% down is frequently required and on the average price you're looking at 40k-80k down...

I live in North Myrtle Beach, have a large STR rental house in the Cherry Grove section of the beach, and frequent Myrtle Beach proper often for dining and shopping.  

I have a little BP ADHD :-) Specifically, we prefer to invest in northern CA since we know the area, have most of our immediate family there, already travel there semi-frequently and my sister-in-law owns her own PM company and can manage our acquisitions which gives us a competitive advantage.

They frequently use unreasonable scope of work to get a projected range for max return otherwise it's usually not a deal.