I would consider getting out of property management and getting into cleaning IF you think they are doing better than you . 

Try interviewing at least three managers.1.

@Kieran Collings - I'm an investor, flipper, and own and run a local property management company.  

Quote from @Andres Lasaga: I am in the process of selling a property to the tenant I have been renting the house for 4 years.I want to outsource the promissory note collections and reportsIt would be only ONE property, for now, any recommendation of a company that can manage the collections and reporting?

New Jersey property management is pretty bad overall.

Are you already working in property management?

In the past when I am looking for a property manager I google to find all managers with physical offices in close proximity to my properties to narrow my search and ignore all sponsored adds that fake that they are local.Since you have self managed, you will be better equipped to "manage the manager".

The ability to effectively self manage would depend on the scale you are trying to buy. 

My wife and I started managing more properties for others as word of mouth recommendations started and we started to use the management and arbitrage cash flow to acquire our own properties and fund the BRRRs we were working on.  

Feel confident turning over management.