We also drive for deals, postcards, ect.

All in all, the operation is running smoothly albeit with stagnant growth.

I have a bi-yearly contract with them to maintain the units and they currently have a new policy where they check for mold in the duct work by an intrusive method and they are finding slight mold growth and are recommending this device called Nasa Air Scrubber (~$1200 per unit). 

Yes, that location is seeing some good growth , hence keeping it purely for equity growth and i had a long term tenant in there.

They are no doubt managing these huge portfolios strictly on a spreadsheet basis and will have huge datasets in which they can spot trends or money sinks and drive out costs from their management profile.

I'm a new investor in Atlanta looking to grow the network.

Needy or entitled tenants (or worse needy entitled tenants) will drive you crazy. 

Given all of the population growth projections for the Vegas metro, I think it's hard to call this the top of the market now.  

I don't care about curb appeal or estimated growth as I don't plan to sell and trying to project 20 yrs out is not realistic.

Ie if you own 5 150K homes and there is 5% price growth then you get 5% on 5 homes instead of on 1 home.