B just wanted to close in a different entity than the one we originally wrote the AOS with.

Are you investing for pure cashflow- any market will do?

Have to do and should do are 2 separate issues.  

Isn't what they offer the same to what an investor friendly real estate agent would do?

@Jose Mejia this is pretty simple to do. 

Those that do are either 1) in areas that are bad and usually only "cash flow" on paper or 2) with exceptionally good deals.

Some of the things I would do are: Look up in county records to see who the owners are of these duplexes, call a few agents that have the duplexes for sale  and ask why the owner is selling, inquire with other investors in the area to see what they know, walk into the local township/borough office and ask them about the area, etc...

Look at your AOS and see what it says.

What methods of investing are you looking to do?

One is humid and one is dry, the types of activities to do are different in each city, take a look at where you would be the most happy as well if you're going to be living there!