Good North Georgia/ Atlanta markets for buy and hold investors

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My partner and I are considering a move 1.5 years from now to Georgia to be closer to family. 

We currently are focused on buy and hold properties SFRs and apartments. We plan to transition strictly into 5+ unit apartment buildings eventually.  

Our family is in both Marietta & Carrollton. we would like to land somewhere in between the two. 

we are ok investing in c-class areas for our SFRs but need B-A class for our appartments

We are used to the the suburbs of Cincinnati Ohio so do not want to go as rural as Carrollton Ga.

Any North Georgia Investors care to shed some light on areas We may want to explore further?

Thank you in advance