How to find good management companies

[Ray Loveless]

I'm looking to purchase some multi family rental properties out of state in the mid-west(arkansa or ohio) and I'm not sure the best PROCESS I should follow in choosing a management company. 

I've only used a management company once so I'm not that experiences in choosing one or questions I should ask.  Is there any tips or gotcha's I should watchout for?  

Google reviews and yelp would probably be a good place to start. any other thoughts.    Thanks.