As @Ben Leybovich says about finding a great deal - "You have to kiss a lot of frogs" and the same is true in networking - it might take a lot of meetings to build your tribe.

ATTENTION CONTRACTORS!!Please leave your email/number if you are a contractor in or around 12210 Albany, N.Y

Quail Hollow                            6.47%                               $263,4002.  

Sounds like I'll kiss a lot of frogs before one turns into a prince!  

My take on condos is that lower class areas with hollow tile construction or concrete construction is a good play.  

Our intentions are to buy asap, then live in and pay down the mortgage by renting out a FROG unit.  

Also just for some more peace of mind, I have four tree frogs (never have been charged a pet fee) in two different terrariums and haven't had any liability issues.

-framing cavity's (wall floor and ceiling) should be completely filled with thermal fiber or roxul.if you have a fire door hopefully it is a insulated one and not just a hollow steel shell. a door with a threshold would be best so sound doenst transfer through gap under regular door.if the units are vibrating a lot they should sit on rubber dampers.theres 2 areas to focus on when trying to limit noisevibrations from one material through another like foot steps above or vibrating machinerythe other is airborne sounds like talking and speakersthere are many products available to help you reduce the noise unfortunately it sounds like you may have to invest some more money and time being they are already rehabbed

@Andrew Flora, kissing frogs is part of the deal of course. 

If it's an interior door, and it's hollow, that's about $40 for the door.