You the investor and owner of the properties will care about your investment the most, not the agent, not the contractor, not the property manager (they can screen tenants but they still get paid but the repair costs are being deducted out of your rental income and more costs if you need to evict a tenant).I've heard great things about upstate NY and would consider looking in that area or within a 2 hour drive of where you live (not sure if you're near NYC).

It's great for a landlord if the tenant is properly screened. 

The key for any tenant, S8 or not, is screening, imo. 

So, the first question they usually ask a PMC is about fees - instead of asking about services and HOW those services are executed.EXAMPLE: PMC states they will handle tenant screening – what does that specifically mean?

I'm looking to switch from cozy mostly to combine tenant screening, marketing and rent payments.

It does many things to help you with Tenant placement like marketing, application collection and screening. 

Non paying tenants(as a newbie I did no screening), dead tenants, Silly fines from the city for nothing, attempted robberies where I ended up with the cops pulled guns on me. 30 recently released convicts as neighbors for a while, a jacked up 7' tall transvestite call girl/drug dealer was my least favorite neighbor.

Reality TV isn't reality...

You add your coverage yourself online and can see all your properties listed on one screen to manage them.

Close to a cool little town, close to an area attraction, etc....Also do a search here and see how to screen guests, in addition to what the hosting sites do.... like no last minute bookings, no short stays....