M2M agreement with PM, legitimate?

[Idan Narotzki]

Hi investors/pms/good people :)

I am about to do my first agreement with PM. I read some property management contracts; In all of them, the agreement was for a YEAR period. 

How common is to make an agreement on MONTH to MONTH base?  

Since it's my first SFH in the area (64138 KC, MO), I want to judge the PM by performance/personal experience. Sound legitimate? Can I expect PMs to agree to this kind of request? (starting with Month to month contract)

Thank you very much!